This is so, so familiar - several years ago I contracted a local guy, who I'd used before, the re-spray an old open topped vehicle. I made it clear at the time that should he not want or be able to do the job he should say so. His response was 'I've just got a couple jobs to finish first' so I delivered the truck & the paint to him but despite a couple of visits to check progress he'd only just started on the prep. several weeks later & the vehicle was still in the corner of his shop. I then gave him a reasonable time to complete the job & when that expired (still no progress) I took the truck away & never offered any payment for the part prep. he'd done or the storage of the vehicle. Needless to say that was the last time I ever went there.