Another Warranty not honoured 300l solar geyser

Our 300l solar geyser burst (2nd time) on 4 April 2018. After much ado A temporary geyser was installed a week later. Told they did not have stock by the call center then we were told there was no metal and now after 103 days they tell us that we don’t have a SANS 1307 warranty. This Geyser was fitted by their preferred installer under guaranty and now they say they will not honor the guarantee when it burst again. This seems to be their modus operandi from phoning around and as read on hello Peter