Cancelling Debit Order to get a response!

<p>I have been trying since 30 March 2016 to cancel my contract with Telkom Mobile. I have always acknowledged that this is an early cancellation and I will be liable for costs. I have tried on 6 separate occasions and received 6 reference numbers, including and interactive chat session online, all to no avail. I am now cancelling my debit order, perhaps that will get a reaction??</p>