Dont feel a Sh"t about their client

I can understand why Standard bank is not one of the best banks in SA anymore. We closed the business account 2 years ago, all fees settled. 6 months later they called again, we did the same, pay the outstanding fees and closed the account. Months later again a call that we owe R3200 on fees and we are handed over. They now call me 5 tot 6 times a day, and non of the people know about the problem....just harrasment on harrasment without sorting the issue out. Not sure how many clients have difficulty with this and if this a strategy to make money....please call me to start a class action.