H J Smith Automobiles Mislead me to purchase vehicle, and also charged me outrageously for repair. Hurst Texas

 H J Smith Automobiles is ripping me off as we speak, i purchased a vehicle through them and they mislead me to believe it was a bigger engine that it really is, and two days later it breaks down. Jerry Smith the owner says he will get it repaired, after the repairs are done i come to pick up my vehicle, he tells me that i have to pay 500$ on a repair i could have done myself for 150$. So after discussing a plan to pay it off he tells me that my orignal payment of 170$ every two weeks is now 300$. Please spread this around and lets shut him down, he takes junk vehicles and "temporarily" fixes them and then charges 3 times they are worth, not to mention every vehicle on his lot has over 200k miles.