Who called from 7204509619

Rings and no one on the line, has called several times.  These robo calls are getting impossible.

Keep getting calls from this number. All Caller ID shows is Denver CO. There is never anyone on the other end of the line. It's just dead air and then disconnects. Working in the automotive industry requires us to answer all calls as they may be people traveling that need assistance. It is wasting my time.

This is twice now that I received calls like this I want to know who and why is someone trying to start crap I want to know

The same - I keep getting calls from this number.

Caller ID shows is Denver CO. There is never anyone on the other end of the line. It's just dead air and then disconnects.

this number keeps calling me and I have hung up, told them to take me off their list as well as told them I am on the federal DO NOT CALL list.  I get another call from a security place about installation.