These Sharks are not rugby

I bought 2x windscreen wipers for my Fortuner early February 2018, Champions, for R136.00. after use for 1 month it vibrates over the screen. During my complaint they could not replace the wipers. They did not even went out of the shop to walk 6 metres to look at the wipers operation. Comparison: Toyota wipers approx. R350.00 per set and last 4 years. Willie's Spares R136 x 4years (48 months) = R6 528.00. They have contracts with the local Mines and therefore being fat cat and not interested in the local individual. I will NEVER go to Willie's Spares again.