No response from Customer Complaints Centre

In the middle of another battle I had with the claims department for a burglary claim, I found myself sitting with another problem due to poor workmanship from service providers appointed by Std Bank, Ken Harrison Plumbers. The geyser started leaking in Oct 2015 yet I reported the same problem in Mar 2015. I called the claims department and they said the only way for them to send out a plumber would be to log another claim which I did, 15/076382. The plumbers came out and concluded that the incorrect pipes which are plastic were installed by Ken Harrison when they attended a geyser leak claim in March, 15/024775, he cut the pipe and stopped the leakage as a temporary measure and advised I get back in touch with Std Bank to get the previous plumbers to replace the pipes with copper pipes. I brought this to the attention of Samantha who promised to look into the matter but went on leave and left Martha as the contact. She followed up with this matter but it seems the Plumbers don't want to take responsibility because they called and said the pipes installed are approved and they use the same pipes in the UK yet I am sitting with leaking pipes. So now I get no response from Std Bank