Standard Bank Insurance service unacceptable

My geyser burst on Wed night 24 June 2020. I tried contacting Standard Bank Insurance since Thursday morning 25 June 2020. No one answers their phone lines and u get a recording to say u must email your details. I then sent an email on 3 occasions since Thursday receiving an automated response that someone will contact me within 24 hours. It's now 72 hours and no one has contacted me. I am without a geyser and boiling water in a kettle to bath.