I am completely disappointed and tirible, they are...

I am completely disappointed and tirible, they are really lying profitionel. It's been a year that I buy a toyata corolla used with a clean carfax and a clean titel also, they have a year of free oil change. But I only once change oil, and triked me in the door they have to change another with a dark color by Aport has originated. Yesterday he said the manager is normal because is a car used and well on the home Toyota has nothing to cover you!!!!!!!!!. and with an interest of 15.50%, they are taking advantage of my weakness because I have not had much experiance in the USA. I deconcile to go there.