You will loose your money and have no car

We purchased a vehicle at we buy cars. Drove 200 m up the road and the cars fuel pump packed up. I called the sales consultant Jean Pierre who told me we should battle home and they would send the tow truck the next morning. It took us 3,5 hours to get home. Next day I called the whole day and was told they coming. No one came on Wednesday morning I called again and was told they called us. Which was a lie as no one spoke to me or my husband. After I told them they lying I received a call from the tow truck. The car was then collected. I was informed they not fixing the car as it would cost too much, there was nothing in the dekra report about the injectors or fuel pump. I viewed other cars one that overheated on the test drive one that wouldn't even start and one that couldn't even drive out the show room because of a short on the wires. I asked for a refund. A very rude sales manager told me I will have to wait. A week they have had my money and I have had no car. I emailed them have spent over 400 min airtime calling them no one gets back to me. I have asked to speak to the branch manager and get put through to the sales consultant. Who tells me they probably busy with it. Be very careful of we buy cars the cars we tested still have the exact same dekra reports when we were looking at them. Nothing was updated. And they will take your money and you will spend alot of money calling trying to get it back. When they buy cars you get paid same day but when they need to pay you back it's a process.