Very bad service and communication

I am very unhappy with the service I have been receiving from We Buy Cars. I bought a vehicle from them on the 28th of November 2024. It has a platinum Dekra report showing no issues. We drove from WBC Silver Lakes to where we live in Vaal Triangle. That is just about 150km. The engine light came on just as we came in to our home town. We immediately took a picture and let the sales man know that the engine light came on. He advised we take the car to a workshop to get qyotations. On the 29th we took the car to a RMI approved workshop as suggested and was informed that the Catalitic was the problem and It can either be removed or replaced. We got a quotation for both. On Monday the 2nd of December the salesman said that we should go through complaints department. On Tuesday the 3rd of December the F&I let me know that the engine number pulled through incorrectly on the contract and I had to resign the contract, which I then explained I would only sign the new contract if I can get answers regarding tha faults on the car. Wednesday the 4th I heard back from complaints that I should send through the quotes. Immediately sending hoping for prompt service. The fault in my contract made me do some investigation, realizing that the engine has been replaced a short while ago. This was never brought to my attention when purchasing the vehicle. On Friday the 6th of December they informed me that they will pay for a decat. Before I accepted this answer I phoned Innovation which underwrites the warranty that We Buy Cars sold me with this car. While driving the vehicle in this time as I don't have any other option (We Buy Cars bought my previous car) theres a constant sound from the front right wheel, i took the car to a tyre fitment centre and they advised that the wheel bearing and the hub is severely damaged and has been for some time. And that this would most definitely not be roadworthy. So what about the platinum Dekra report? It is now the 13th of December. No one can tell me what is going on. I have been emailing and calling everyday to get an answer but seems like the ball just gets passes to the next person. What astonishes me the most is the bank informed me that they have not yet paid for this vehicle as I did not sign the new contract with the new engine number. • The day I bought the car they let me go with an expired license disc and no temporary plate so what would happen if traffic police pulled me over? • They want to take the cheap way out and pay for the option that voids the warranty that they sold me. • This vehicle would under no circumstances be able to pass a dekra report. • Apparently the managers who are supposed to handle this matter are on permanent leave and unreachable. I have been very patient, having to pay other entities for transport as the vehicle is not drivable. My income relies solely on me having a reliable vehicle and now I am unable to do my job. Do you think my work will be sympathetic because the "biggest car supermarket" operates like a Joburg CBD ****** car dealership? They are not sympathetic at all. Please just give me the service that you promise on the radio.