INEFFICIENT CUSTOMER SERVICE/SUPPORT

I bought a car from the dome branch, a Mercedes which I was told it was recently serviced which I found out it wasn't true & on top of that Mercedes did their own check and charged me R3400 to transfer ownership on their system from previous owner to myself, things that should have been said upfront but now I keep on chasing the consultant as I need my refund for this money, he said he would speak to the manager and has gone silent and ignores me, when I buy a car, I expect the money that one pays for license, registration and delivery fees to cover such things not to buy a car and find out there's still more to do as a client to fully transfer the car from previous ownership, that should fall to the dealership and not the client as the client is already charged all those fees, I need my refund as that information was never ventilated.