The Pep Boys

I went into Pepboys on Kings Canyon in Fresno, CA. For an oil change, and the 3 step fuel injector cleaner.. They give me an oil change? (I think) And put fuel injector cleaner into the gas tank. (Or so they say they did...) I don't really drive my car, so I never noticed anything wrong until I took a 2 hour drive to the beach. It started grinding and made tapping noises. I made it back to Fresno and checked the car. They disconnected the radiator fan, overfilled the transmission fluid and coolant! If I didn't have the ac running, the car would have over heated and caused more damage because they OVERFILLED the transmission fluid! I am very upset that an oil change at pepboys would have caused me a transmission or even junking the car! This is unacceptable!