Duratherm - Zero customer service

My geyser was replaced 7 months ago through an insurance claim. It was replaced with a Duratherm Geyser and already the element has burnt out. I have submitted a claim via insurance and Duratherm are supposed to contact me to come and replace the element. They have not bothered to contact me or let me know what is happening. I have been without hot water for 4 days now. Zero customer service!