Ellies inverter

I should have done my homework 1st before buying a Ellies inverter for R11000. This peace of sh.t only lasted for 5 months. Batteries only carry a warranty for 3 months. R6000 to replace the batteries. Where do you draw the line. Car battery has a warranty for 2 years. What goes around comes around. Sosial media is nice place to drag you peace of sh.t through the mud