7 month cancellation ....

I cancelled my service in February requesting the final invoice which, according to their website, will be within 30 days. It has now been 7 months - multiple support tickets, multiple phone calls, multiple persons supporting me... My service has only now eventually been cancelled on 11 July 2018, but the service amount for the last 6 months has not been credited back to my account and the final invoice issued. My transunion payment profile has now been negatively affected for non-payment. Next step is the legal avenue to recover the costs I have incurred, and projects I lost due to my transunion profile being negatively affected. My last contact was with Thobeka Mseleku and her supervisor was Themba Nyeni on the 21st September 2018 at 17:46 - where it was escalated and marked for urgent again ... can we just resolve this please!