They are calling a business phone.  It is 11:40 am & just got the 10th call from them.  It needs to stop.

I tried calling the number in the hopes of getting on a Do Not Call list, but the call goes to some strange voice mail.  I just started hanging up on the guy.

You might not be able to trace it. If you can't call the number back, then it is either spoofed or from a voip phone. Contact you provider to see if they can block it, or google call-blocking devices.
If they are calling your smartphone, look on your app icon screen for your app store, and search for call-blockers. If your phone is an Android, and you're from the US, I recommend the Mr. Number app-it blocks calls, texts, and callers who have spam complaints against them, and best of all, it's free.
Best wishes-I hope that helped.

i get calls every frickin 10 minutes EVERY DAY.  I thought that by law if you ask them to stop calling they have to lose your number.  Because they are calling from India I don't think they understand what 'supervisor' or 'manager' or STOP CALLING means.  I know it sounds harsh but it's the truth.  The number does not work when you call it back.  Any idea's on how to get through to them?

Does it ever stop?  We are having the same issue...

They call 8- 10 times a day looking for different people, none of which work here.  The first five calls came in 1-5 minutes apart.  They have given different business names the last of which was B2B.

They have called our offices over a dozen times in the last day.  Same as stated earlier.  Looking for officers in our company to invite to a e-mail marketing conference.

They call our office almost 10 times EVERYDAY!!! We cannot get them to stop calling - they are asking for officers in our company-exactly like John's info. There are 2 different companies doing this & from what info I have found they are calling to confirm business addresses to sell to telemarkers.

Several people have called from this number asking for various officers in our company, trying to send them invites to a "business-to-business" conference. The information is very vague. All callers speak with an Indian accent. The tell us they are trying to "send a mail" then go into confirming our address. They claim they are a "business conference organizer." They tell us for more information we need to receive the invitation first then respond to it.