Confirmed number is to ConServe-not Comserv. Calling for someone w/ an address other than the address to which the number called was associated. Caller was very polite and offered to remove the number from their database. Per Internet research, ConServe's expertise:
"is in collecting and rehabilitating delinquent educational loans and debts. We work with colleges, universities and state guaranty agencies, and are the #1 collection agency on the U.S. Department of Education federal contract."
Caller: Conserv