Unclear answers

I have recently downgraded my account because I was not benefitting from a Gold cheque account anymore. I was charged twice in one month for monthly service fees and when I queried this with the call centre and in the branch I was told it was pro rata for the month. If it was pro rata then the second fees should have been less than the normal fees but it was the same. I have never had this type of service from FNB before but I guess when you not rich they do not give a damn about you.