Standard Bank SA

Hi there I have a problem here, I had an account with standard bank but because of the ********** activities that were happening in my bank account I decided to change my bank. I did not close my account I just stopped using it. So they called me to tell me that I owe them some money for bank charges. I requested an account number where I can deposit the money, I have been requesting that account number since the beginning of the year. Now I had to leave the country and I told them that I can only communicate with email but instead of writing me email they called my family almost everyday and when my sister asks the to send me an email they never do. Until I sent them an email and threatened to escalate this if they are not providing me with the account number. Now the problem that I have is that my credit score cannot be updated because of the. I have sent them several emails following up. They requested my ID number and I provided them with it but they haven’t responded until today. Please help