Don't do business with these people

Absolutely terrible service. I bought a used car from them and within 2 weeks it was back at the shop for repairs, which took 4 months and within 1 month of driving, it had a huge oil leak. When I eventually decided they should take it back, the agent, Sam, said that they can only do a trade-in so he came to do a valuation, messed up mu gearbox and told me he was not responsible for it because he had brought an external person to do it so I should talk to them.