Inverter

I purchased an Ellies Inverter from Mica in February and it started to give problems in June / July. I took it to Mica who sent it to Ellies to be checked out. It took TWO WEEKS during load shedding to discover that the battery was a dud and to swap it. Nothing ever happened when I was told it would. When it was returned, one of the cables was missing. Jason provided me with a cable, but it didn't work. He then told me that according to Ellies they no longer stock the product (a UK connector - without which, the inverter doesn't connect properly). Jason tried to make me a cable that would work, but it looked dangerous to me so he undertook to have a proper one sourced. Several weeks has passed since then and when I stopped by today I was advised that it hadn't been done. I don't know whether the fault lies with Mica or Ellies or both, but its a pretty poor show. I want a proper cable and I want it ASAP!