Bad Business Culture

Good day my mom went to go have her VW Polo TSI car to go get polished at this company and she was referred to by NTT motors as they work together because theyoutsource.To cut the story short.The guy working there advised her to get the engine of the car cleaned as they do that with Pre owned cars of NTT motors and she told them at first that the cleaning of the engine can damage the car so she doesn't want it but then the guy working there advised that they do clean engines off NTT motors and he reassured her that from experience since they do NTT motors pre owned cars that there won't be any damage to the car.So she agreed they do that.Next thing when she fetches the car she notices that the radio of the car is not working the screen.She then reported back and they started being arrogant and that it's not their fault because they don't understand why and they aren't willing to fix the car.So they mislead her and then after they don't want to take responsibility of their negligence.I write because I want this issue addressed or they will have to deal with our lawyers and media to resolve this issue,if it's not fixed within 48 hours.They are a bad company and need to be outsourced or this still more innocent people who will suffer through them.NTT Motors is this what we expect from your referrals.