Taking much to long for a reversal

Unfortunately once again I have to write a review due to bad service at this business. A deduction was made on my account end February and I was assured that it would be reversed. Todate nothing has been done! Once before an error was made when I lived in Jhb and the reversal was done immediately but apparently here in Cape Town one has to wait for the branch to first get authorisation and in the meantime I am missing out on interest due to no fault of my own. FNB you really need to improve your service to the clients. I am seriously thinking of withdrawing my investment with FNB.