Purchased used car

I purchased a 2003 Jeep Grand Cherokee about a little over a month ago, and have had problems straight from the beginning!!!. 3 hours after I purchased the jeep it broke down, they paid to get it towed and fixed a fuse, I would have had to pay for the towing if I had it but I did not so they paid for that. Since then the rotors went bad as well as the front brake pads got those replaced, then the throttle sensor and the fuel filter, then I was starting to have over heating problem, so then the catalytic converter broke and the car broke down again, so now its a sensor problem, I have never in my life gone through this many problems this shortly after purchasing a vehicle!!! I am beyond pissed off, I cant do nothing about it because I signed a as is contract, which I should have brought a mechanic with me. After buying a car from Best Buy Wheels I found out from my sister that her and her husband purchased a car from then a few years ago and the car kept breaking down and they had to junk it, so heads up to anyone trying to find a reliable car from this company. If the problems don't stop I will have no other choice but to find me a lawyer who specializes in the lemon law, because this is just ridiculous 7 problems in less then 2 months!!!!