First National Bank
Unauthorised debit order non profit bank account

Daktari is a non profit company banking with FNB. To get donations we need to give our banking details to donors and mention them on our website.
However, for the last year, we are having all sorts of cell phone companies debiting our non profit bank account with unauthorised debit order.
We have asked many times to the bank not to allow any debit order on our bank account, unless requested personally by us, but it seems impossible. So far, we managed to get these debit orders reversed although in many case we still have to pay for stop order fees. This time we couldnt get it reversed that easy and are now asked to fill in a complaint form to the bank. The solution given to us is to find out who debited our account, for which beneficiary and then go to the police to open a case each time we have a debit order.
I do not even know the phone numbers of these cell companies debiting our account and do not have the time to follow up with all of them, neither spend my time at the police station.
All I am asking is that the bank does not allow unauthorised debit orders from our non profit bank account that they are holding for me. I pay bank fees every month!!!