Unhappy client

I opened a business bank account this year at Vangate Mall, as I recently bought over a business in 2021.The process alone was frustrating, when I eventually received my bank card it was incorrect, the credit card didn't have a pin so they gave me a debit card in the meanwhile. I went abroad for a month, came back my banker then had left the bank and I wasn't informed of this. I stil did not get the pin fixed and thus was 3 months afterwards. In June of 2022 we had to close shop due to revamping, I requested the account to be closed so long as the bank charges are still running off the acc. July the account went in arrears due to this, I reached out again to the enterprise and receive a closure of acc form. Completed it the same day to sent it back. Aug chargers went off, I again did a follow up, they advised no form was received. When we checked my emails I realized it was sent to my work email instead of the enterprise, I spoke to the new broker and he was so insensitive as it was my fault for sending it to the incorrect email address. I get reminders to say the account is in arrears, but no one is calling me back as I requested his manager to call me.