Still waiting for feedback after incorrect billing

I realized that there was an extra R20 on my bill and when I phoned 111 it was established an itemised bill was on my account after my previous Hellopeter complaint, which I did not request. A lady (cant remember her name) phoned me and asked if they can give me the R20 back in airtime. I declined, because I am on a contract and I dont finish my minutes as it is. When I dail 111 I hear the money for the itemised bill is still on my account. I am waiting for feedback from the “solution expert”.