False promises

I bought a car with We buy cars on 24 December 2020 not knowing that it has a problem every after two weeks I need to refill the oil, I took it to the workshop for the first time they assumed that it was a pipe that needed to be replaced, so they replaced the pipe however the problem was still their. I told them again its still doing the same thing on the 3th of August 2021 I took it to the workshop again that's where they diagnose the car, they told me that Engine overhaul/replacement I have been very patient enough and i had come to a decision that i need a refund,so that i can buy a car from another trusted dealer. I will never recommend this car dealer to anyone as i feel that they are bunch of ******.