Authentication Method Changed without Permission

I always buy my airtime online from Telkom using my Capitec Bank debit card. My card is signed up for online purchases. I do not use the Capitec App as it doesn't suffice in my requirements and do internet banking.

Since yesterday I can not purchase anything online and the system keep on asking for the authentication using my cell phone. It counts down from 60 seconds and bombs out at 45 seconds. I do not authenticate using my cell phone and I haven't changed my authentication method from using the MasterCard SecureCode whereby it pops up and ask for my specified password before authenticating the transaction.

This is high risk if Capitec changed my authentication method without my permission and **********.

I need the authentication method changed back to my choice and not to what Capitec wants to use. I also want the name of the person that changed my authentication method without my permission. I will be escalating this to the Ombudsman for Banking Services if the pre-ombudsman at Capitec doesn't resolve this risk.