Standard Bank Business Account Closure

I have been a client with Standard Bank for around 30 years, and have 6 accounts with them. I am a prestige client, but fell into hard times during the Lockdown. I only opened a Business account in May in order to apply for a COVID-19 term business loan. I then paid R500 into the account as requested. I received no response from the application, but Standard bank continued to deduct the entire R500 in monthly fees. I signed a form requesting the closure of the business account at the end of July. However they continued to deduct monthly fees putting the account into negative figures. I have emailed continuously since the end of July to get the fees reversed and business account closed. I have had no response, but Standard Bank continues deducting monthly fees. My prestige banker forwards my emails but that's it, still no response.