geyser not working

on the 19th Nov new geyser was replaced after the old 1 was damaged.i had to pay excess of R2270 to the service provider NoordWes Construction because my ceiling was damaged as well. On the Saturday 21 November there was no hot water coming out.i send the sms to the service provider NoordWes Construction about the problem he did not respond to my sms on the 23rd I called outsurance to notify them about my problem up to date no correspondence was received both from insurance and NoordWes Construction.the frustration I am going thru every nite & morning to boil water with the kettle to bath and do house c****s is so unbearable to think about the service am getting while paying insurance is not ayoba. I am so frustrated.