Sold me a car on a Saturday. I paid 90% in cash an...

Sold me a car on a Saturday. I paid 90% in cash and financed a small amount because I don't typically carry debt and financing a car would be good for maintaining my credit score. I could've driven it home then but I left it there until Monday bc I needed to get a parking permit for my neighborhood. Over the weekend I used the registration I was given to secure insurance, I sold my old car and got a parking permit so I could pick up my car and take it home. On Monday two different managers told me two different stories (one said they "messed up the pricing but I could still sell the car" and also "my manager will tell you the car is unsafe, but don't believe him and don't tell him what I told you" The manager only told me "we are trying to work it out" without any clarification of what "it" was. I had a few hours left to back out of the deal so I told them I was very uncomfortable with these shady unclear and conflicting stories - I'd never encountered such a thing before especially on a vehicle that was already sold! The GM leapt at the chance to refund me the purchase of the car - also something extremely bizarre. I paid within $1500 of the blue book value so I have no idea what the hell is going on over there but it was a costly, disappointing and exhausting experience with an extremely shady group of sales-shysters.