No response for change of banking details

I have tried to change my banking details with Tracker but with no success. I emailed a Tracker employee on two occasions to change my banking details. I received no response. I then lodged a query on the Tracker website. I received no response. I then lodged ANOTHER online query. AGAIN I received no response. I am busy and do not have the time to sit on hold waiting for you to take my call. <br> <br> Tracker- After three months of trying to notify you, I am closing my bank account and your next debit order won't go through. I am your customer and won't be running around trying to help you take my money. If you want my business, YOU can call ME. <br>