Review Refund due to me

I had repairs done to my Hyundai Accent ( on 30 August 2018 ) at Hyundai Pinetown, and I paid a deposit of R 2 500.00 on 21 August 2018 for these repairs to be done. When I collected my car from Hyundai Pinetown on 30 August 2018 I paid a further R 5 495.50 for these repairs. I subsequently found that the R 2 500.00 paid by me on 21 August 2018 had not been deducted from my repair bill and that I had been charged for new wiper blades to that were supposedly fitted to my car. I did not ask for these wiper blades to be fitted, and to make matters really worse, new wiper blades had NOT been fitted to my car. I requested Hyundai Pinetown on that same day, 30 August 2018, to refund my deposit of R 2 500.00 and the cost of the wipers that had not been fitted to me. Despite numerous contacts with Hyundai Pinetown and a long e-mail to the dealer principal, Mr Mark Torrance, I have to date still not received my refund. This is now two weeks that I have been trying to get my monies due to me refunded, with no success. No communication at all from Mr Torrance either. This is totally ridiculous and certainly unacceptable service and treatment from Hyundai Pinetown and Hyundai Finance Dept. A problem that has arisen that is Hyundai's fault. I have been more than patient and accomodating, and if the monies due to me are not paid into my bank account by 16h00 tomorrow, 14 September 2018 then I will take further action, probably to the Hyundai Ombudsman as well ( I see on the web that there is such an organisation / person ). I will probably forward this matter to this Ombudsman anyway, whether my monies are refunded as requested or not. I cannot find an e-mail address on the web ( it is not given on the site that I looked at ) for Hyundai Head Office because this is where I wanted to forward this e-mail to.