950w Ryobi generator poor repairs

I bought a 950w Ryobi generator on 18/08/2021 from Builders Warehouse in Secunda (online order). At first it was fine and I could run the TV and a few lights from it but it soon started to get weaker after just a couple of times being used. All I could switch on were a few lights. Took it back for repairs on 16/12/2021 and got it back on 07/01/2022. When running it for the first time it was even worse than before the "repair". Now I can hardly even switch on any lights and everything flickers. The service in store from Nolwazi was friendly, but the repair on the product is disappointing.