Refer your account to a collection agency. It oversees local property tax assessments and functions as a funding agent for the illinois housing development authority. Harvard Collection Services Llc Complaints Better Business Bureau Profile The illinois department of revenue is a tax collection agency that serves state and local governments. Harvard collection services illinois department of revenue . Copyright 2019 harvard woodstock enterprise zone | all rights reserved mchenry county administration building | 2200 north seminary avenue, woodstock, illinois 60098 phone: The department of revenue is also dedicated to effectively running the state lottery and preserve the program’s integrity. Illinois department of revenue collections kick off when the agency believes you haven’t paid your full tax bill. While on the phone, the guy told me that i should wait 3 weeks after filing before i call. The department considers food ordering and delivery services to be marketplace fa...