Webuycars Horrific service. Please help

I purchased a vehicle last saturday. I was told the car had an oil leak and needed a service etc. Drove home to centurion, the purchase of the car was at webuycars Aereton. Got home and obviously driving the car you then pick up some issue's. An hour later wanted to go to the shops. The ignition seemed locked.the steering wheel could turn but the key did not. Immediately contacted the sales person and i was advised to send a video then log a complaint on their website. Which i did.48 hours later i get a call saying they need proof before they can even consider collection of the car. Yesterday i got an email after offering information that the claim waa rejected and we should wait on the rejection email from the HOD.