Rewards redemption robo call. Amazing how when you call the number back your presented with two options 1) redeem the $100 voucher "reward" and your hit with a "sorry the number you have dialed is not in service" and 2) not interested and you get "thank you for your time you will not be contacted again" [bear in mind I have caller ID blocked so I should show up as unknown or private number to them. It probably does nothing but I blocked them in Google Voice and the Android phone/dialer app.
I got a call from this number at 1:20pm. Didn't answer it though. Certain call numbers like this can actually trace your signal and get information that way. I just don't risk it hardly at all with any of these types of numbers.