Call Centre refused to change my banking details telephonically

Your Call Centre refused to change my banking details telephonically and insisted that I do this at a branch by taking along some or other proof of something or another. Well, I am not going in to a branch to update the banking details where you collect the repayments from. My Credit Facility with Capitec can now no longer be paid by Debit Order. When you try and collect the next instalment, the transaction will fail because the account which you have on file (for purposes of Collecting the monthly instalments) has been closed and you refuse to take my new banking details telephonically. This is what I assume will now transpire: You will initiate the collection. The collection will fail because the debit account has been closed. My Credit Facility will become overdue and in arrears. Capitec will phone me to advise me of the problem. I will then give them my new banking details. That’s all.