IF you are getting a lot of calls from the number, there is a way aside from trying to battle them.
1) Attorney General is not likely to help -- more likely commerce department from your state.
2) If you owe no debt, contact
www.ftc.gov with your complaint.
3) Send a Cease and Desiste notice, via certified mail. (It will still take days to get there,you'll have to put up with calls awhile longer.
4) File a complaint with the FCC about "Dead Air" or "War dialing" calls.
5) Keep written Records. Dates, times, numbers...if you have caller ID, especially.
6) Try a telezapper.
7) Debts over 7 years are past SOL. Uncollectable.
If all else fails, you can try "Spoofing" your name...but it will probably backfire. You could call yourself by the name of that little Austrian Hamlet at 12 degrees East. Be sure to pronounce it correctly, though. Errors will be caught.