After the sale you don't hear back from WBC... Not good at all

We bought a car cash the 10th March 2021 from We Buy Cars in Cape Town Paarden Eiland.. They really pressured us and drove the car out Thursday the 11th between 17h00 to 18h00... When we drove home all was in order but the aircon did not work. Friday we took the car in to refill the aircon where we were informed they need to replace the parts for R7000. We informed we buy cars immediately... Up till now they are not assisting us. The branch manager ELROY LOUW advice his number can not be shared and we need to log a complaint. This is not acceptable at all. The car cost R86000 another R7000 above this is not acceptable. We Buy cars.. This is not good customer service... The car was not even driven and we informed you in less that 24 hours... Surely you can assist. I would like to get feedback on this.. We have been trying to get help since Friday.