Why am I getting bills from Heartland Campus Solutions/ECSI from Coraopolis, PA ? How are they connected to the U/M?

Heartland Campus Solutions/ECSI is the billing servicer for The University of Michigan. They produce the statements for outstanding loans, federal and institutional, held by the University of Michigan. In addition, delinquent Student Accounts debts transferred to our department are billed through Heartland Campus Solutions/ECSI.