replaced timimg belt

took my altima in for a regular timing belt replacement and ended up being a nitemare to get the car back. it seems they dropped a bolt down into the motor and had to pull the engine to retreive it and then had the nerve to charge me for the labor. this place is not where you want to take your car as they simply dont care once its in their shop they know they have you on the hook. oh i also found he advertises to be ASE certified but there is no record of it--go figure