Pathetic Service from Standard Bank

I had an account with standard bank and I requested closure in 2018, the account was never closed and fees accrued on the account which the bank states I'm now liable for which I'm not I was helped recently at the Lynnwood ridge branch in Pretoria by Phumzile Tjatji and previously helped by Lunash Syster, who called the call center and allowed more fees to be accrued. I am not liable for this fees and now I'm being called by lawyers saying I have an overdraft I never signed or requested an overdraft.