Sold As-Is clause in a Bill of Sale I believe I am being wrongfully taken to…

Sold As-Is clause in a Bill of Sale
I believe I am being wrongfully taken to court over an auto sale. The buyer brought with him a bill of sale that states by signing this bill of sale he inspected the car and approves the condition it is in. He now wants to return the car one week later saying it does not pass inspection and that the car is a lemon. I was wondering by him says he accepts the car ”as-is” am i obligated to return his money and take back the vehicle

vehicle title I made a verbal agreement to buy a vehicle.

vehicle title
I made a verbal agreement to buy a vehicle. Seller sends me the title completely signed over 100% correct and a bill of sale that is wrong. I never pay them because the BOS is wrong which they then refuse to send a new one. 2 months later I bring the title to the DMV and they say the title is good enough for me to me to retitle the vehicle in my name. It was stupid of them to send the title like that to begin with but the question is am I facing type of illegal problems here by retitling this vehicle in my name.

Cell phone contract I joined T-mobile July 13 2006.

Cell phone contract
I joined T-mobile July 13 2006. Less than 2 weeks later i went in to cancel because i was getting NO service, even in my own house. All the places they say are part of their area would never work. The contract specificly states you can cancel your contract within 14 days w/ no problems, no fees etc. When i go in they tell me i signed a secondary contract which says i promise to stay w/ them for at least 4 months. I’ve been back and forth w/ the company many times. Customer service didn’t even know what a secondary contract was. So because of this secondary contract which totally contradicts the first contract i am unable to cancel my contract. I don’t understand how ONE company can give you 2 totally different contracts that contradict each other and stand by it. The T-mobile contract says i can cancel within 14 days. My question is how is it possible or legal for them to have you sign these 2 contracts that go against each other and there is nothing i can do….according to them?? Dont i have the right to cancel regardless because the first contract says i can?