Both Builders and Ryobi have been PATHETIC at resolving issues with my Generator

I bought a Ryobi Generator from Builders over a year ago. Since day one I have had issues with the generator. It would run for a while and then switch off. I took it to Builders in Armitage Road in Pietermaritzburg immediately I encountered the issue. For the last year or so I have been going in and out to Builders but the issue was never adequately resolved. In addition it was realised that this generator was using oil at an abnormal rate. This was communicated to both Builders and Ryobi and my generator was finally sent to Ryobi for evaluation. They kept the unit for about 3 days and I was informed that it had been sorted out. I see no resolution to any of the problems and the unit is still switching off after about 4 hours of use. This requires me to fill 200ml of oil before it will restart. I have been very patient with both Builders and Ryobi and have been pushed to the limit before I decided to post my frustration on Hellopeter. My name is Nikesh and I can be contacted via AA Khan.