Ellies power backup systems

Purchased Ellies LIFELYNK CUBE MEGA 150WH inverter brand new from Leroy Merlin, after fully & running only a wifi router the unit lasted a mere 65 mins. On returning the unit to Leroy Merlin, I was told it had got tested & was fine on 2 occasions. Sure as taxes, the unit failed completely after 8 months, returned again & was told there are no components available to repair. It is now out of warranty & I am R4500 out of pocket. AVOID BUYING THIS PRODUCT