My parkef car was hit and the driver left?

My car was parked in a church parking lot. The parking lot was nearly empty there was more than enoygh space for others to park. I guy from the church hit my drivers sode door and left a dent about 14 inches long and half in deep. He drove off and it wasnt till someone came in and said something that I knew. The church elder got hom on the phone and I spoke to him. We ecchanged info and I said I would call him when I get an estimate of the damages. This happened on xmas eve and there was no garage open till tuesdsy. So I go fpr the estimate and now he says too high. He agreed to pay for the damages but it looks like hes gonna give me a hard time. Im getting a second estimate as soon as possible. As of today its been eight days since the collision ... Is it too late to file a report with the police and ask for his insurance to pay? I should hAve called the police immediately but I hesitated because I thought this could be easily resolved. I live in connecticut if this helps. There were witnesses and he admitted to hitting my car and driving off.