worsed service i have ever recieved

I regret buying a car at Webuycars. i Bought a car at Webuycars the Dome end of November i didn’t even drive the car for a week it had a gold sticker, first week i got the car the computer box died got fixed now the gearbox is dead and multiple mechanical issues, engine light. i took the car to an RMI approved repair shop they quoted me and Webuycars stated that the money is a lot they are cancelling the deal now this is affecting me I’m being told they will take 2 weeks to cancel the finance. not this is affecting me I’m paying for a car that i only drove for five days...i requested to take another car at the dome and I’m being told to wait till next year, i regret buying a car there.