Dispute on bad installation net being resolved!!!!

My report of January 2016 is still not resolved!! Another task team came out to inspect this bad installation at my home. Once again everyone agreed the installation was done terrible. Then they would have gone back to write a report on this. Nothing as yet!!!! I e-mailed many times, I have left messages many times, but this is not resolved by the managers of the Pretoria branch.<br> What does one need to to do to resolve a dispute with ADT??<br> And yet again, every month I get an invoice for the bad installation and they even tried to deduct this money from my account, which forced me to reverse the payment.<br> What more can I do to try and resolve this??