DO YOU KNOW HOW TO BLOCK THEIR NUMBER FROM A CELL PHONE?

I received a call on my business phone. The caller asked if he could speak to  my mother who passed away five months ago. I told him that would not be possible and asked if I could help him. He pressed me as to why he couldn't talk to Mom, so I told him. He then got upset,called me rude,and said that I should have told him that to begin with. I replied that I was not in the habit of divulging information to unknown,out-of-state callers. He then insisted on being told who had taken over for Mom, still not identifying himself.I told him that I have owned the company for years and he could talk to me about whatever he was selling. He exclaimed that I was just wasting his time and disconnected. Who wasted whose time?

They called, this is a call from NRS... blah blah blah...
They called for a person's name, and I'm not the name...

Received a call from their auto mated machine out of the blue. I do not owe any money since I filed for bankurptancy in 2004 and all of them should have been cleared, unless they were stupid enough like ildiots to buy from another collection agency unaware of the filing of BK-7 in 2004. But I will investigate the matter and make sure they stop harressing me again.

this number calls me multiple times a day. although i do owe cingular money from over a year ago, i have not ever received anything through the mail.

the people that work there are by far the most inconsiderate and rude people i've ever spoken with. when i told them that i did not have the money at this very time ((which she damanded i paid at that very second)) she asked how i supported myself and my daughter. continued to ask if the man that answered teh phone was my father and if he was supporting me while i continued to allow my debts to grow. when i asked for information to send a payment later, she said i had no choice but to pay today.  i hung up. looks like the choice was ultimately mine.