Same story...heard about something like this from my dad a week or two ago.  The man on the phone identified himself as RT tech support, which caught me off guard. We do business with a software company called RTS (who does in fact have a tech support center), so I had to ask him to repeat himself. No personal name was given.  He said, "you are using a windows-based computer, correct?" I laughed and said that was a really good guess! He didn't even acknowledge that I said he was guessing. I hung up after that.

It's a scam - Microsoft and it's partners do NOT cold call anyone.  You should NOT give remote access to your computer to any caller, unless you have called them first and know exactly who you are talking to.  More here:

http://www.microsoft.com/security/online-privacy/avoid-phone-scams.aspx

Cybercriminals don't just send fraudulent email messages and set up fake websites. They might also call you on the telephone and claim to be from Microsoft. They might offer to help solve your computer problems or sell you a software license. Once they have access to your computer, they can do the following:

Trick you into installing malicious software that could capture sensitive data, such as online banking user names and passwords. They might also then charge you to remove this software.

Take control of your computer remotely and adjust settings to leave your computer vulnerable.

Request credit card information so they can bill you for phony services.

Direct you to fraudulent websites and ask you to enter credit card and other personal or financial information there.

Neither Microsoft nor our partners make unsolicited phone calls (also known as cold calls) to charge you for computer security or software fixes.

Telephone tech support scams: What you need to know
Cybercriminals often use publicly available phone directories so they might know your name and other personal information when they call you. They might even guess what operating system you're using.

Once they've gained your trust, they might ask for your user name and password or ask you to go to a website to install software that will let them access your computer to fix it. Once you do this, your computer and your personal information is vulnerable.

Do not trust unsolicited calls. Do not provide any personal information.

Here are some of the organizations that cybercriminals claim to be from:

Windows Helpdesk

Windows Service Center

Microsoft Tech Support

Microsoft Support

Windows Technical Department Support Group

Microsoft Research and Development Team (Microsoft R & D Team)

Report phone scams
Learn about how to report phone fraud in the United States. Outside of the US, contact your local authorities.

How to protect yourself from telephone tech support scams
If someone claiming to be from Microsoft tech support calls you:

Do not purchase any software or services.

Ask if there is a fee or subscription associated with the "service." If there is, hang up.

Never give control of your computer to a third party unless you can confirm that it is a legitimate representative of a computer support team with whom you are already a customer.

Take the caller's information down and immediately report it to your local authorities.

Never provide your credit card or financial information to someone claiming to be from Microsoft tech support.

What to do if you already gave information to a tech support person
If you think that you might have downloaded malware from a phone tech support scam website or allowed a cybercriminal to access your computer, take these steps:

Change your computer's password, change the password on your main email account, and change the password for any financial accounts, especially your bank and credit card.

Scan your computer with the Microsoft Safety Scanner to find out if you have malware installed on your computer.

Install Microsoft Security Essentials. (Microsoft Security Essentials is a free program. If someone calls you to install this product and then charge you for it, this is also a scam.)

Note: In Windows 8, Windows Defender replaces Microsoft Security Essentials. Windows Defender runs in the background and notifies you when you need to take specific action. However, you can use it anytime to scan for malware if your computer isn?t working properly or you clicked a suspicious link online or in an email message.

Learn more about Windows Defender

Will Microsoft ever call me?
There are some cases where Microsoft will work with your Internet service provider and call you to fix a malware-infected computer?such as during the recent cleanup effort begun in our botnet takedown actions. These calls will be made by someone with whom you can verify you already are a customer. You will never receive a legitimate call from Microsoft or our partners to charge you for computer fixes.

More information
For more information about how to recognize a phishing scam, see Avoid scams that use the Microsoft name fraudulently.

If you need help with a virus or other security problem, visit the Microsoft Virus and Security Solution Center.

To help protect against viruses and other malicious software, download Microsoft Security Essentials.

Windows 8 includes antivirus protection that?s turned on by default.

This guy called me this morning on Jan, 30 telling me that my computer is sending out warning sygnals. He spoke with an accent, probably some illegal trying to scam me. So I told him I can\'t get to my computer now because I have a broken leg. So he was insisting why can\'t I? And is the computer running? I told him I can\'t go on right now so he asked when can I. I told him in a couple of days. He finally hung up. So now this number is on my don\'t asnwer mute list. Anytime you gat a guy speaking bad english, you know it\'s a scam.

A gentleman with an Indian accent called my cell and said he was from RT Tech Support.  He told me my Windows computer had a virus and asked me to turn it on so he could help me.  I told him I had an Apple.  He told me to turn that on.  I then asked him again for his company name and he hung up.

Caller ID said Manchester, NH.  

Received a call on landline.

Called me and said I had a problem with my Windows computer. Funny part is, I have a Mac XD

"hallo sirr. You have windows computer. It is working incorectly. I am calling from tech support."

what a crock of shite

Same thing my computer is in danger. Very hard to understand the person talking you could hear many people on the phone in the back ground. I hung up when he said let me talk you through how to fix this problem.

I received three calls this morning.  The first came up as "Unknown".  The second as "Blocked" and the third as 603-657-9466.

Each time, the male told me that there's a problem with my Windows operating system on my computer.  He said that error messages continue to be sent to the server.  He asked me to pop open my computer so that he could tell me what to enter so that I could see the error messages.

I did hang up, but would like any feedback.  Thank you.

Phone number called a couple of times no one on the other end but you could hear background sounds.

I got a call from 603-657-9466 that sounded like a scam of some kind.

They said they were tech support and were calling to tell me of problems with my windows computer. I said I didn?t ask for tech support. They said that?s right, you don?t know about the problems with your computer. I said that would be my IT departments issue, not mine. Then he hung up.

There was a call center sound in the background, very loud?

Anyway, thought I would report it.

Some guy called my cell and said he was from RT Tech Support.  He asked me to turn on my computer so he could prevent  my computer from crashing.  he said my computer was going to crash now.

Called my cell, I answered. I heard background noise (sounded like a call center), then they hung up.