I just got three calls in a row from this number. I didnt answer and knew right away by the messages what it was. It is an inmate calling from a jail(prob Allegheny County). They will either try to get you to call a long distance number for them or try to scam you into something. We used to get many inmate calls when I worked at a hotel (where they are thinking a stupid desk clerk would connect them to an outside line thinking they are a guest within the hotel having phone line problems) Anyway, beware. If you have caller id, it's always best not to pick up unknown numbers and wait to see if VM gets anything.
I just received the same message about rates and accepting calls from the 412-592-0160 number. I called back and the number was disconnected.
I hate these kinds of things.