Took car for major service with no problems and now I have an idling problem. WORST EXPERIENCE EVER

Have the worst experience at Care care Clinic in Bellville, now I can see why they have so much complaints and 1 ratings. I took my car for a major service on the 15th November 2023.Nothing was wrong with my car no issues at all. The day I went to fetch my car it was having idling issues and went back the next day. The manager Floki, said they checked my car and couldn't find anything. And told me they had the same issue with a Toyota Atios and after 2 weeks the problem went away. My car never had an idling issue, now my revs is going up and down. Fluctuating seem like my car loss power. The speedometer don't even move when I change gears it's stays on same speed which it never did and when I stop or in park the revs goes up and down between 500 and 1000 and I never had that problem. I spoke to the area manager today the 24th November 2023 and told him I will not pay a sent, because I took my car in for a service and now there's a problem on the car as I explained to him the situation. This is the second time I have an issue with car care clinic and the previous manager told me the same thing when I replaced my clutch drive with it and see what happens and let him know eventually the area manager managed to resolve the issue. The manager also told me that when I drive with the air - conditioning the revs dont fluctuate. Why would I drive with my air-conditioning on when I never had this problem.

I will not take my car to car care clinic again this is the last time. It seems like every time I take my car for a service there's a problem. I would this matter to be resolved as I will not pay a sent as I have spend enough money already at car care clinic.All a person do is spend money at this service centre.

I want an answer for this and like I said I will pay a sent or more. If your area manger can't resolve my problem, then I will definitely take it to the divisional manager. I have never experienced this anywhere else. Car care clinic won't see me again once the problem is resolved.