Poor Service

Good Day I have been in a endless battle with tracker since the 17/08/2015 where I called and informed that I have changed my banking details and they never updated the details on their systems and have now cost me R400.00 in bank charges and when requesting a callback they call back and make promises that they are not keeping and now when I request for a callback no-one is returning my calls and this is even after I have submitted 5 callback requests over 2 days.