Terrible service and accounting at tracker

I have had an account with tracker and upon expiry of my initial contract period I did change the type of account to a month by month and since I did not have to pay for the device it meant that subscriptions had to reduce. For some months they continued debiting my the old cost. In may after contacting the call center which does not even have a call reference number, I managed to have the issue Khulani Ngwenya to assist with the issue . There has been an agreement that my Tracker account would be credited with an amount , which would be adequate to cover my May installment and part of June installment. to my surprise end of June the full amount was debited from this account . I did write to Ngwenya to look into the issue and resolve it. to date the was just an acknowledgement of my query and nothing has been resolved. the case follow-up and service in tracker leaves a lot to be desired.