Frustrating lack of assistance with licensing issues

Brought a car from the Durban Branch of WeBuyCars in cash in June. As is their policy I received the vehicle's documents in 21 days but when I went to change ownership I could not as WeBuyCars had sold the vehicle to someone else in early June and the vehicle is therefore in that individual's name. Went back to WeBuyCars and they said they would resolve the issue. It has been four months now since I purchased the vehicle with no solution in sight. No one has contacted me to give me an update or apologise. I have visited the branch several times to enquire and complained to their costumer care online. At the branch they said they would reimburse me for any fines inquired and the additional costs I will now have at the licencing office but customer care contradicted such by saying that I alone am liable for all costs and told me to be patient. I have been very patient. I am still waiting. I have had to park my car until this is resolved but still pay for insurance. This is my first vehicle purchase but I can not even enjoy it. I am stuck using public transport instead. Very disappointed and frustrated.