restoration?Body man won't work on my truck

[Daves72'GMC]

I took my truck to a man which owns his own body shop last year sept. 2nd and he gave me a receipt in writing to fully restore my truck in like new cond. with the price he's charging me and it says it will be finished in one year and sighned it.It should have been done sept. 2nd this year. He hasn't worked on it in 5 1/2 months and doesn't give me a reason for not working on it other than firing 2 workers which leaves him all by himself and keeps saying he'll start on it soon and works on other vehicles.He told me last Tuesday he'll start on it in 1-week.My truck is all apart down to the frame and wheels, rear end.I thought I would give him an ultimatum next Friday and tell him to restore my truck or pay me what its worth.What is my best recourse?Lawyer? Thank you everyone for your help and advice. Dave