Bad service

On Tuesday I called outsurance because my Geyser was leaking they send a plumber out to come have a look at it when the plumber arrived he said it a manufacture problem and because the Geyser is still new they have to come and repair it. On Wed the guy from the manufacturer came and said that has nothing to do with them and a plumber must come fix it. On Thursday the same guy arrived again and told me the same story that the manufacturer must come out. This is a brand new Geyser that was replaced in Oct 2017. I do not understand as to why no one wants to fix my geyser. Every time something goes wrong I need to pay an excess to day that the bill is for the insurance I am given the run around. Its 4 days now that I am sitting without hot water and no one is prepared to come attend to my problem. I really do not think this is fair outsurance advertises how good they are but when u need assistance then no one can come out