RMI and Sparklight Gearboxes very disappointed

I am extremely disappointed with Sparklight Gearboxes and the RMI’s lack of mediation. In Nov 2023, I paid R52,050 (Invoice INA56972) for a full gearbox overhaul. After traveling only 27,059 km, the unit has suffered a catastrophic internal failure (stretched chain and faulty valve body). Sparklight is attempting to hide behind a 12-month warranty, ignoring Section 55 of the Consumer Protection Act regarding "Reasonable Durability." They are now demanding an additional R43,000 + VAT to fix their own premature failure. Despite involving the RMI, my correspondence has been ignored for over 24 hours