Rubicon worst customer service and product

Bought a 2400 synapse inverter in February 2023 messed up my gel batterries only get a hour during loadshedding. Sent it in for repairs 2 weeks later there feedback is that there is nothing wrong with it. I purchased it through brights hardware in Mitchell's plain and they gave me a loan unit the exact same and it works perfectly. Now i must return there unit for my unit that is still a problem and my warranty is done end January 2024. I want a new unit for peace of mind not my old unit. Worst customer service ever. Dont buy rubicon synapse products buy growcol which is my next option.