I bought a gmc acadia here and could not regret th...

I bought a gmc acadia here and could not regret the purchase more. The first 90 days it was in the shop for all but two weeks. Then ended up having to put a new engine in the car and it's still leaking and still has wiring and electrical issues. I bought the car for 7500 and put 1k down and somehow now the buyout price is over 10k. My all time worst car purchase ever. When i test drove the car their was no problem and nothing seemed out of order. Then after purchasing it not 30 minutes later it breaks down and I take it to a parts store and have them pull codes off the computer only to have the guy look at me and say "someone disabled the computer" seems they purposely didn't have much gas in the car for the test drive for a reason. The whole purchase feels very very shady.