Future Ford Bought a car for 10k that needed 7k worth of work 3 months later, $2700 worth of extra warranty I bought would fix everything Sacramento California

I bought a 2000 Infinity I-30 from Future ford in October 2007, a few months later, I came in with a engine warning light, the $2700 warranty I bought from them did not cover the repairs I need to get rid of the warning light, all the spark plug coils are bad. Total repairs needed came to $7k. They did some of the repairs, one of the things was a lot of leakage from gaskets on the motor, they wouldn't cover that because when I bought the car, it had 90,400 miles on it and the warranty I bought only covered that on vechiles that were purchased with less that 90,000 miles, I missed it by 400 miles, no one knew about this when they told me about the warranty.

They will cover the seat motors, but not what makes the engine light come on?

I either want my car fully repaired or bought back, I don't want this car anymore, after some looking at the car, it may have been in an accident they didn't tell me about either

Brett
Sacramento, California
U.S.A.