Unauthorised debit orders.

On the 24th of January, FNB deducts monies from my account, which is unauthorised as I am under debt review, confirmation from the Debt Review centre has been received that this is corrected on their system. As for some odd reason they took me off even though I was making monthly payments. This morning, another unauthorised debit order goes off from my account after I spoke to a lady in the debt review centre yesterday, confirming that their system is correctly reflecting the debt review, and that refund of the debit order for the 24th will take 5 working days to be refunded. She confirms that no further payment will be debited off the account. I have been sending emails to the Debt Review centre from the 24th, I have sent 4 of them and have not received any response. I'm under debt review, I cannot afford additional unauthorised costs going off my account, as FNB is literally taking food out of my children's mounts with these 2 deductions. Now I don't understand as when I phone the centre they say all is good and they will refund me and the very next day they take another debit order.