Horror Insurers with bad attitudes -SA Homeloan Insurance

I am so frustrated with the service from SA Homeloan Insurance.I don't know what else to do hopefully I can get help venting on this platform.I had a burst Geyser early April this year SA Homeloans Insurance sent out their supplier to assess Molapudi Construction they confirmed it needed to be replaced and did that about a week or week n half later around 8 or 9 at night we hear a noise outside n it's boiling hot water gushing out of the Geyser that was just replaced. So I called the emergency line n was told I had to close the mains myself and the supplier would attend to it in the morning. Please bear in mind this boiling water from the Geyser gushing out for about half an hour at a time. When the supplier came in the morning Molapudi Construction he said it's not his problem it's under warrantee n the manufacturer needs to attend to it. So patiently we wait for the manufacturer Ariston Geysers I think they came after two days n replaced the thermostat n said all is fine , two weeks later the Geyser again does the same thing I report it Molapudi again says the manufacturer needs to come back n replace the valve n thermostat. Only after a week and two days does the manufacturer show up at 6 in the evening with horrible attitudes n they insisted they will only replace the thermostat again n he was so rude and insistent. The Geyser seemed fine for for a few weeks then started again n now not only does boiling hot water gush out but it trips the main switch as well so clearly there's something wrong with the Geyser as it's not working like a normal Geyser should also we don't have onle one Geyser on the property none of the others do this. It happend again last night I called th3 emergency line only to be told again there's nothing they can do I should go close the main water supply until the manufacturer gets here. I called SA Homeloan Insurance head office to escalate or get a solution to this ongoing nuisance to be told by the claims manager that I shouldn't shout and I'm not a plumber so how do I know its faulty.I don't think its rocket science to tell that something is wrong with it. I have videos n photos of how this boiling hot water gushes out this is so dangerous to my family to the pets to my helper ,Karin whos supposedly the manager at SA Homeloan insurance claims was so uncaring after waiting for her call for half a day she comes onto the call and says how can I help u as theres nothing we can do speak to the manufacturer, is this the service I'm paying for and with that tone and attitude she didnt think i should be upset or yelling. REALLY ! . What kind of customer service is this they are so fast so collect premiums n increase premiums but so useless when it comes to delivering on their promise. Worst service experience ever.