What is happening with FNB

I cancelled a debit order in April on my app and with the gym. I sent my cancellation notice and I was given an amount to pay and I paid it and sent proof of payment to the gym. There was 2 months left in my membership (May & June). Now my issue is that the debit order still goes off my account while I cancelled the debit order with my bank. I go into my app this morning and I see two deductions occurred in my account and I don't see the payments under my debit orders. I did not even get a notification from FNB. I go onto a secure chat and this rude person Nqobile assists me. I give her the information of on the transactions and he/she asks for my ID and I tell her I am not giving you my ID as I feel it has nothing to do with this and this is a secure chat on my app. He/She decides well I will not assist you and closes the chat. I don't get why people go to work when they don't want to be there. Can FNB please sort this mess out and listen to instructions from their clients. I cant reverse this amounts on my own because they are not under my debit orders.