Poor service from ABSA Homeowners Insurance

I have an existing Home owners insurance with ABSA. In December 2018, they replaced my Geyser. In May 2019, the thermostat was replaced. This past Wednesday, the thermostat malfunctioned again. I reported the problem to ABSA at 10h00 on Wednesday morning. At 13h00 a plumber was dispatched and confirmed that the geyser was under warranty and that the supplier needs to replace the thermostat. I contacted ABSA on Wednesday afternoon to follow up on the status. Thursday I contacted ABSA again to confirm the status, with no change. Friday ABSA still didn't have an update. Today (Sunday, 14 July 2019, 18h30) I still haven't heard a word from them and I still sit without warm water.