Yea it sucks you will probably have to get a lawyer involved. $1600 is an absolutely absurd price for a junkyard trans regardless. Transmission shouldn't have been more than a few hundred and maybe $400-500 to swap it so about half what they are trying to charge.
Also threaten to file a complaint with the BBB and every other website known to man...
All mechanics screw up sometimes, it's how they handle it that determines how good they are. If I were working on it I would have eaten the loss and not lied about it.
before i shut my shop down (thanks covid), i would charge 300 + parts to rebuild a trans like that one...
swapping it out with a junkyard trans (assuming they brought it to me), I wouldve charged like 100-200 (depending one the person) just to straight swap it and replace the input outputshaft seals and fill it up... and Im a competent mechanic with some integrity....
1600 dollars is about 1000 to much...really its about 1500 to much when you consider they had it in and out 4 times over 5 weeks.
and whats with the guy refunding the money you paid via card, because he wants cash?
Is this a real shop, or just some methhead in a garage? cuz if its a licensed business i would keep pushing it and pushing it, and make sure everyone knows the name of the mechanic and his integity level...
I once had to remove and reinstall a 700r4 3 times in a row beacuse i was doing something wrong... I was going to take the 300 dollars i was paid to do the job once, and pay someone else to fix my mistake. but then i decided to take one more crack at it, since at that point i was pretty familiar with the trans.... turns out I had the bellville spring in upside down. you live and learn, but you should always put your customers best interest first