Rude Ford sales agent

I am extremely unhappy and shocked at the level of customer service and the tone used in communication with the sales agent who sold me my car. Initially when I bought the car it was communicated to me that the quote will include delivery of the vehicle as well as car registration and change of number plates as this car was purchased outside of my province of residence. However when the car was delivered to me it was still registered and came with limpopo number plates. When I asked the agent about this he told me I can send someone to handle that for me and send him the invoice. After months at work and not being able to go to the traffic department myself he advised me to get someone to go for me which I did. I sourced out the service of Ran Man motors which handled everything for me hassle-free with constant communication. They told me that to get a gauteng license disc my car needs to go for a roadworthy test which will be an additional charge, they also told me that they will charge me for printing out the new number plates and to my quote they will add a service fee. I received everything as promised and when I sent through the invoice to the sales agent at Ford he in capital letters said in a mail my invoice is ridiculous and he will only refund me for the license disc. I explained to him that I couldn't get a license disc that is registered in gauteng without the roadworthy test and this was a service I had paid for already and I expect a full refund. His attitude and response to me is absolutely unacceptable and rude he cannot tell me after I paid for a service he should've provided in the first place that he will pick and choose what I get refunded for. This is something that was covered in the vehicle purchase invoice and now I have paid twice for it if he doesn't refund me. I am appalled and frankly very disappointed at the lack of empathy and the level of professionalism this was handled at.