Who called from 3053688102

All I can find is it is a cell phone from near Miami.  The caller ID says V12311071100090.  This is our second call in 2 days.

We just got a call from this number. The Caller ID shows V1231152430009061232. I answered but didn't say anything. After a couple of seconds, the caller hung up. Usually when the Caller ID shows "V" and a long number, it is the dreaded "Cardmember Services".

Got a few calls from this (305 368 8102) number over a few weeks time, offering to lower credit card interest. Would like to have them stopped and perpetrator prosecuted.

Annoying. Calls and not even a human on the other side.

Who are these people and how do we stop them from calling? We are on the Federal Do Not Call List and still  they continue!