Renault Alberton Bad service

Every year since I bought my Renault capture in 2016 I used to take my car in to be serviced at Renault Alberton and I paid so much money to them.. This year my brother in law did everything only to find out that Renault was putting parts in my car that is way too big and it started damaging my water pipe alot of my pipes and things in the engine was loose and not clipped in where they took it off.... I went to the branch and the manager told me that the guy that did the service the last time left the company not taking responsibility I didn't employ that person Renault did unacceptable Renault must take responsibility for their employees when they mess up