Worst Service for lodging a claim

I have had a burst geyser over the weekend, have been trying to get through the call centre since this morning, eventually after 2 hours got through an agent who said the plumber will be out at an excess of R850. Still waiting with no feedback . Tried calling through to the call centre after a very longggggggggg wait eventually got through and the agent said he will call back with no luck. Dropped an email and they ask to phone the call center. Dont know what else to do.