Standard bank and there service

I'm so digested with the service I got from Standard bank

I opened an account with them in 2019 which was fine until I lost my job due to covid. Standard kept my account open, and never called me once to let me know that the account was still open and accumulating interest. to an amount of R6000. When I called in to find out why they have not contacted me the call center agent was so rude to me saying that I'm liable for that amount and I need to make a payment, which I did make a payment arrangement of R300 every month which i was paying but they still handed me over to debt collection agencies.

I can't even count all the calls I've made to them asking for a reason as to why this account was not closed and I was not notified of this. They can't give me a proper reason saying its system is auto-mated and out of their control, I have asked if the calls are recorded and still haven't received any feedback up till today.

I feel like I was taken advantage of and don't know who can assist me.

Please can someone give me advice?

Thank you