Absent Service for Settlement Payment

Good day Last week Thursday I paid the settlement amount for my car based on a quote I received a day before. When trying to contact Wesbank for confirmation that the account is closed and for the next steps in receiving my Natis documents - the call centre didn't answer their phones, nobody rep**** to 2 emails to ***, and the online profile login OTP did not come through. Today I received an automated statement showing the next month's debit order will still run on 3 July - this is wrong as the car has been settled! Until now, nobody has contacted me in any form.

Please help to make sure this account is now closed and no further debit orders will be running.