Burst geyser unattended to, over 500litre water loss.

Last week Tuessday when walking passed the geyser i had discovered that it had a little leak, we took precaution before the leak/dripping could get worse and called standard bank home insurance. they then sent through two individuals who upon inspection said that it was the fault of the previous guys that were sent to replace the geyser on a separate occasion at the beginning of the year. those individuals were then sent here to check what they could have done wrong on their previous visit, they just fidgeted with the geyser and made the situation worse, the geyser is now leaking furiously, we have lost close to 500litres of water, they also took out the stopper tap which was attached to the geyser, we are now unable to close the water to the geyser. they said they needed to go to the office to fetch a new geyser and they would come back to replace it shortly. they have not returned ever since, the geyser is still leaking, water is being wasted, and our yard is being soaked with this water. upon calling standardbank insurance we are being given no feedback a to when the issue will be sorted.