Cadillacs By FC Kerbeck

I have a CTS 04 and I came here for my Car engine light kept coming on they gave me a run around they told me one mouth is was the Cadillac converter so the light went off for about two weeks. So at this pointing called they told me to bring my car back now they said it was the computer I got a new one so now I done spent over $33000. Went home now it's a mouth later I took the car back they said they could not find nothing wrong with the car but my light is still on so they asked me to leave my so I did they called me the next day and told me that I need a New battery because they could not get any codes off of it the cost for that was $275. At that point I took my car to a on the street Mechanic and they told me that I have a 6 Cylinder car and two of them went.... So on that to be said FC Kerbeck got over on me.