Bad service

I have been servicing my Renault Clio 2020 at Motus Renault Menlyn for a couple of times now. My car needed major service for 60000km in May 2023, so I took it in for major service on the 25th of May 2023. They said everything is good in the car and I have an approved stamp to prove that the major service was done in my service book. I paid R4264.49. I realised that my car starting to overheat and spilling water in June, I could not take it in as I was away on sick leave after having an operation. I called them to let them know the 5th of July to explain the problem and they said I must bring it in. The car went in on the 6th of July 2023. I was told that the radiator has moved from where it is supposed to be due to an impact from an accident, that's the reason it's leaking. The car hasn't been in an accident. So this means I lose out on my car warranty and need to pay R10000 for a new radiator. From the past services I had done at Motus Renault Menlyn, I was never informed about this moved radiator problem. Motus Renault Menlyn is a ****. This is ridiculous and disappointing service from Renault.