Ripped me off and ruined my car

Do not take your car to these people! I took my Nissan in for a full service... when I got the car back it was not washed and it had complete loss of power and even started backfiring a wee later! when I went back the owner was very rude to me and blamed me for the problem and wanted to charge me again to check the problem out. It has been over a month now and I will have to go to the dealerships to rectify the problem they caused! I have never met such arrogant people before. Please if you know whats good for you avoid ACD and go somewhere legit.