Who called from 6093189650

Comes up as "Customer Service" on caller ID. I answered and they hung up. I called back and it went to a voice mail that says "You have reached Customer Service, if you would like to have your number placed on our do not call list, press 1" So I pressed 1 and it said "Please enter your ten digit number now". BS

This number shows up on my caller ID as Atlantic City several times a week and leave no message. Since I don't answer unknown calls I have no idea what they want nor do I care. How do you block these callers?

calls about 1x a week and leaves 3 seconds blank on my answering machine.  had the number blocked.

Number Calls and leaves no messsage..Call Back States You have reached Customer Service   same as above/below