FEES ON CLOSED ACCOUNT

Three weeks ago, I closed my savings account with Nedbank Tygervalley because I opened a Savvy Plus account with them. However, on a weekly basis, I get sms's from them informing me that I am in arrears with my account. Due to my job, I am only free on Sundays and Mondays and it is not possible to go and see them every time. After the first sms I went to see them and they informed me that fees were charged on my savings account after it was closed and that I had to open the account again so that they can write off the R5 outstanding and close the account again. The next week I received the same sms again. I went there again, and I was told to just ignore the notice. They will sort it out. However, now after three weeks, I still get messages. When are they going to sort this out? This is now harassment I think. I am not responsible for this situation and they are not keeping their word in sorting the matter.