Dodgy car sale from Rite Wheels

I bought a Renault Clio from Rite Wheels in Pretoria Wonderboom. The transaction was done on the 3rd of Apr 2018 and while waiting for the 48 hours for the money to reflect on their account, I stated tirelessly that the car registration paper as well as the illuminated service light should be resolved and car should be ready for collection. Both my requests were not met on the day of collection (5 Apr 2018). The owner of Rite Wheels, Jaco Swart, assaulted my friend and damaged his phone when we were demanding the car registration papers and for the service light to be resolved, we opened a case of assault and damage to property against him at the Wonderboom SAPS. To date I still haven't received the car registration papers and the service light still illuminates after taking the car to Renault. Rite Wheels have been handed a letter of demand by Jacobs Attorneys, yet Rite Wheels remains stubborn.