Biggers Mazda

I helped a friend purchase a used car recently from Bigger's Mazda in Elgin, IL. They sold us a 2006 Mazda Mazda5 with 40k mi on it. They claimed to have invested in money in getting ready for sale, but after getting reassurance that it was good to drive in the short term we purchased the vehicle with only a $500 discount. Salesman was polite but very much a used car salesman throwing us every pre-meditated line for every concern we had about purchasing the vehicle. I pointed they had turned the rotors vs replacing them, and after only a month of driving they are warped. Also the car had noisy tires that should have been replaced but they did not replace them assuring us there was nothing wrong with them. We replaced them ourselves as a precaution, and then attempted to get a wheel alignment, and then the car was not alignable due to a defective front suspension strut. Now we need to replace both fronts to get the car to align correctly. Yes used car buyer beware, but buying a used Mazda from a Mazda dealer we felt secure in our decision to purchase the vehicle, but they refuse to assist us to remedy the issues. I am not sure whether we need to escalate it to the BBB.