Poor quality batteries , no quarantee

Thivha online store sells batteries on bobshop , Thivhakoni sold me a faulty battery but refuses to replace it ( battery started to fail after 2-3months ), to make matters worse he cooked up a falsified load test at extremely low loads to show battery is "fine " which it obviously was not .Also blames Mecer inverters for damaging his gel batteries notwithstanding that I have a letter from Mecer technical stating their inverters does handle gel plus I have instrument proof ( photos of inline 12v load meter ) showing the mecer inverter indeed cuts of correctly for gel batteries . Installed load test meters on the 220v side as well as the 12v side of the battery with photos that clearly shows this battery is faulty and fails too quick ( will supply copies to anyone that wants to see it ) , Thivhakoni just refuses to aknowledge the facts and prefers his own theories and just walks away from showing any responsibility towards product quarantee , so much for being an honest businessman