Debit order

My husband is struggling to get his Telkom contract cancelled now for the past 6 months. He has completed the online portal for cancellations, continuously emailed Telkom, phoned over R2000+, yet no solution. We are residing abroad. Telkom cannot be blocked from his debit orders. We have tried contacting you but the online secure chat does not work. To send a message one needs to put in the country code, yet I have gone i and out of the page every time I click on the button nothing happens. Its frozen. So I cannot send a message. We want the debit order blocked forever. It is completely unacceptable that we have no way of contacting the bank unless via phone call. Do you know how much just a 2 minute phone call cost from New Zealand to SA. We also have families to feed. At this moment we are suffering! We need the help of our bank to support us! I and my husband are awaiting your answer and your assistance. My husbands is Peter Richard Pum Kind regards