Who called from 6123457590

Same as above, really dumb and sounds completely unoffical. Thought it was a scam right away.

Telemarketing call to my mobile phone.

They keep calling and calling about a warranty

Frequent call, I did not pick up the phone because it is number that I did not recognize.

I am not sure how my cell number was obtained, but I found that my cell phone has a number blocker on it.  Blocked calls do not ring and go to the mailbox.  Worth knowing about for calls such as this.  For my land line, I signed up for do not call.  I am afraid to do it for my cell because I do not want to put my number out there.