Yes I have a 2008 Nissan Pathfinder that the motor locked up in so I took it to the carlot that I got the truck from and this guy has my truck for a m

And I gave him a thousand dollars to get started but we agreed on 1800 dollars to fix the truck and he want answer any of my phone calls I went up there to see if he has taken the motor out and he tells me the truck is over his mechanic house so I told him I just want my money back but he tells me he can't give that back unless someone pays him for the mechanic taken the motor out. But he hasn't shown me any proof that the motor is actually out the truck plus he's constantly asking me for more money and haven't fixed the truck yet. Please tell me what I can do about this!!!!!