Failure to close paid up account by ABSA

I am a business banker at ABSA and I have received bad service since I joined in 2016. In July I paid up my other business account to be closed as is not trading and just accumulate bank charges. Paid up and send proof of payment and till today it has not been closed and accumulated more bank charges. My business banker, Lindiwe Mthombeni who is helpless and has tendency of blaming clients and not offering any help nor even call to check on the matter tells me I have to pay again the bank charges balance before she can close it or she can do nothing about it. I have called some of the people at Absa but till today nothing is done and soon they’ll drag my company name to poor debt saying I am not paying the account. I complained about poor service from Absa since I opened my account till today is the same. Poor business experience ever.