Can't cancel debit orders

The cell number has been cancelled....it does not work anymore... I have repeatedly tried to cancel a debit/stop order online for Vodacom. Vodacom has had proof of the account being paid up numerous times but keeps debiting my account. Standard Bank is just as inefficient and keeps allowing the debit to come off. Vodacom does double instalments so that it is over R500 and I cannot reverse the payment. Standard Bank MyUpdates Notification

Dear STUART RAVENSCROFT,

Stop order R564.87 from Standard Bank account ending in 3997 on 2022-10-01.

Lastly Standard Bank does not respond to emails unless its an automated response. I need my ITB3a certificate for sars. Come on there must be someone left there who can sort this out!!!