Received a phone call yesterday, on my cell, male voice asking for "Bob" - interesting enough it was a fifth phone call that day, asking for "Bob" - all calls withing 2 hours frame time.  Today morning they started up again!  This is probably a scam/phishing; to me it is very annoying and I will "ignore" all their calls.  Here are the numbers calling for "Bob":
623-777-9373;  702-514-3116;  720-452-5643;  702-425-9147;  206-319-9835;  206-777-1561.  
Wish I could block all incoming calls from them.

Who is this?

i called and told them I was on the National Do Not Call list and to remove my number from their data base, guess what.. have logged 3 more calls from them today.

got a call on my cell...usually don't get these on my cell because I rarely use it for calls.  I didn't answer...just came here to check if it was a nuisance number...obviously it is!

I have been receiving calls from this same number for the past three days. Today I called them back and left a message stating that I would them arrested for harassment if they do not stop calling. We'll see if it works.

Someone keeps calling me also from the same number,and never leave a message. I don't answer because I don't recognize the number. Hopefully they quit, today they have called me 3 times. I call the number back and it's a recording for Affiliated Business Group so they say.

got a call from this number as well and heard what sounds like someone dropping their phone and that was it

This caller uses several different numbers all originating from Phoenix.  No message and if you answer there is no response.  Calling the number gets an answering machine.

Calls at least once a day to, I guess, harass people or it is a "bot" over which these people have no control.

Unfortunate and annoying.  I just don't answer anything from that area code.

unwanted call several times a week from 623.777.9373