Ryobi generator

Hi, I bought a ryobi generator 950w at Game vosloorus only worked for a couple of months and stopped working, took it back to game and they said the will send it for repairs. Than after couple of day I got a call to say I need to pay R850 for repairs while the generator was still under warranty, could pay cause I had no money and I feel the were robbing me because I used the right petrol and the right amount of stroke2 oil....