GWM Westrand appauling service

I bought a new vehicle from GWM Westrand, Regitration fees and delivery fees amounted to R10 750. When I asked for an explanation about these fees I was basically attacked by the center manager for asking, he told me no one asks these questions, he has been in the business for long and no one has asked for a break down in 4 years I wanted to get out of the deal but after advice from my lawyer I decided what's to come was not worth my peace of mind I paid the money and picked up my vehicle. P.S. the vehicle was not delivered to me, I went and got it myself from the dealership