Bad service provider/ and claims department

On the 7th of November we had a overflow pipe leaking. We called Standard bank and advised them. They had sent through Plumstead, who changed the valve in the geyser. The very same evening the pressure on our taps were forceful and broke our pipes in the bathroom and shower, also damaged the laminated flooring in my ensuite, we had called the plumber back but he said he is not sure what happened. The query was closed and the over flow pipe was still leaking. we called standard bank on numerous occasions thereafter advising them about the incident and the water we were losing and no one is solving the problem. After 2 weeks of flowing water from the over flow pipe kwikot came and advised that the plumbers need to come back and sort out the tape, but to date no one has. Every time i call the call center they have no record of us calling and stating the query has been closed. We have made numerous calls to standard bank and everyone promises to call back but no one does. we even have a claim from 2014 which is still not resolved and i have been transfered to 4 different departments or cut off when querying the 2014 claim. The service that Standard claims department is pathetic.