Bad after service.

Bought a 2012 landrover discovery 4 from we buy cars silverlakes 2 weeks ago. When we collect the cars papers 8 days ago we noticed a loud turbo noise developing. I consider the sales representative and he lock a claim for the matter. I was told to get a quote from a RMI approved repair workshop and send it trough to them. On the decra report only the front tierod end rubbers need replacement no other damages or repairs need. I immediately took the car to supa quick to change the 2x tierod ends. The specialist showed me the belly plate where only hold into place by 1 bolt where there should have been 8x bolts. I did phone the salesman and told him just to be aware off this. The Quote was just over the 100k to replace turbos and repair the a/c that has also stop working. After numerous calls and emails Chandere no response not even a email to confirm they are working on this matter. In the meantime I’m worrying about further engine damages and the possibility for my wife and kids standing next to the road. My plans was to buy another car and a boat in the future from we buy cars but there service change my mind. Would rather pay more to get a honest deal.