Supamac not taking responsibility for damaging my vehicle while being serviced.

Took my car in for a major service by a subdivision of Supamac - Mastermac. During the servicing, they damaged the crankseal which caused oil spills. Squealing noises came from the engine bay and they had to replace components which I had to pay for. I took the car back to them on 4 different occasions and every time I had to pay them to "fix" the car. Each return was a different excuse. Eventually I had to take the car to Renault dealership to be properly fixed. Renault had to replace the Cambelt, Accessory belt as there was OIL on the components. They also had to replace the Crankseal that was damaged by the servicing mechanic. As of now, I'm still battling to get feedback from Supamac regarding the reimbur*****t and have decided to log this complaints with the Ombudsman and CPA