Disappointed

I tried to cancel 2 debits on my account via their banking app however it gives n annoying message that I can't. Then it direct me to the actual debits of which I firstly informed the one company to debit from my other banking account and the other company was cancelled via email. However I sent an email to fnb explaining to them that there should be no debits going off on my FNB account as the companies has been informed. Nevertheless the companies tried to deduct from FNB account and I was charged for fees for an empty debit. My bus ticket money was sent to my FNB account and only a R30 is now available and I need to have that money reversed.