Bought ATV, seller wont send title? HELP!?

[Homeskillet]

I bought a used ATV from a guy Sep. 22, he needed to pay the quad off, and would send me the title when he got it, he said usually less than a month to get it. I still dont have it, and he has stopped answering my emails and wont answer his phone. He have me a written bill of sale with both our signatures and the ATV vin number on the bill. I also have all the emails sent between us when making the deal. what can I do? the quad was around $4800, and was in Ohio, and I am in michigan.

and please dont tell me i shouldnt have bought it without a title, I have learned my lesson.