Bad service from Gauteng housing company

Hello Peter my name is Refilwe Mametja, I bought a house through a developer, Gauteng House company funded by the bank (Standard bank) my problem is that I have been waiting for 7 months for electricity connection and the developers are giving me the run around, not answering my call, I called Eskom to find out what the delay is, but I was informed that the developers have not made payment for my application, when I confront the developer he says Eskom is lying and delaying, but he fails to provide the proof of payment, i really need to move into this house because the bank is already debiting their monthly payments, these new house developments are at GaRankuwa unit 9 and Rosslyn, and there are 7 other people with the same electricity issue, under the same development, Gauteng Housing Company, the developers are David Manji ***, Swart Tielman ***, I have tried complaining to the bank in question but I was told since I signed the happy letter there is nothing they can do, I called the NHBRC multiple times was give email addresses of the people who deal with complaints, I have written since October this year with no response. I even regret buying this house, which was supposed to ring joy and relief to my life has brought a nightmare. Please assist me further.