Very poor poor service, no one care except money that I'm paying

Since last week I claim for my geyser and I paid the access fee, absa appointed *********** plumber to fixe my geyser Simunye plumber, the lady by the name Mandy she's very rud, when I complain to absa, I was told absa can't call the plumber direct. Hwo am I paying when I'm not happy I will be sent pillor to post. Very disappointed and this is not the first time. Water doesn't come out of the hot tap, anly cold water is running on the tap. I must use my gas stove to warm water but I'm paying insurance. Poor poor poor service always