I called back the number, they are a debt collection company, their name is Glass mountain capital. I think they use local numbers with local area codes in all states so if you see a local number you will answer, but its all re-directed back to their office in IL. If you go to this thread you will see how many phone numbers that we know of they have: http://800notes.com/Phone.aspx/1-877-881-3034
I also have been receiving calls from this buber but when I answer they just hang up. I haven not received any mail from this Glass Mountain company either.
No answer, if you can't respect the person by saying something when they first answer, then don't call back or send a letter stating what the issue is. Debt collectors are the worst and to be honest i feel they are going against the law by how they are calling then hanging up. Ridiculous people.