Never never never ever call these ppl back. Especially if they do not leave a message. It is another form of a scam going on where they charge you whatever they want when you call them back. 5109397010 This number keeps coming up on my cell. Today I answered it. Some spammers offered consolidation of credit card debt. BS. Never EVER call back phone #'s on your caller ID. Blocked the number and if they don't leave a message they must not want to talk to me very bad.
Received a call for the first time from this number today. Didn't recognize, so I didn't answer. No message left. When I tried to call back - it was busy the first time. Tried again and it went through, but literally only said "To be put on the do not call list, press 9". I pressed nothing...and it hung up on me about 5 seconds after the message prompt.
Seems like a totally legit call - LOL... #BLOCKED :)