Who called from 6264457785

When I answered,  no one was there.

Their message was a strange beep and then an automated "goodbye".

called several times and did not leave a message, when answered there was no one on the line.

I received 3 calls today from 626-445-7785; two on my home phone and one on my cell phone. They are soliciting getting a lower rate on my credit card. Twice, I got a funny beep and then just a "good-bye". I have requested they not telephone me.

Same old scammers with a new number (because fed-up folks like me have blocked all their other numbers).  Ignored, blocked and reported AGAIN.  It never ends.