Contact your Assessor's Office 203-245-5651. Do not ignore your bill, even if your vehicle has been sold and plates returned to Department of Motor Vehicles, stolen and not recovered, declared a total loss, or if you have moved from Madison or moved out of Connecticut. If any of these situations apply to you, you may be entitled to a credit. Contact the Assessor for information regarding the acceptable forms of proof for the issuance of a credit. Two forms of written proof are required, and you must apply for the credit within a limited time.