Aug 1, 2017. IMPORTANT: UC Student Loan Billing Servicer Changing Effective August 1, 2017. The University of California (UC) is pleased to announce that it has engaged the services of Heartland ECSI, Inc. (ECSI) to replace Conduent [ formerly ACS Education Service (ACS)] as the servicer for all of the University's. Jul 19, 2017. The revised servicing model is a return to the way student loans used to be collected….