Worst experience from Morne Blaauw Williams Hunt Pretoria

I bought a Opel Astra last year with Williams Hunt Pretoria, the one on Visagie street, they initially charged delivery fees but I fetched the car myself, the agent who was assisting was Morne Blaauw, didn't receive good service from him, I recently realized that my car was registered to a wrong ID number and I can't renew my license disc unless changing the ID.