NRB Accounting and Nedbank review: Unauthorised debit order on my bank account

Dear Sir/madam
For quite sometime a NRB accounting debit order has been going off my bank account.
When I approached the cashier at Nedbank in November 2021 I was told to cancel the debit order with NRB.
I can not find any such Company with that name.
All I find is just many complaints of similar nature.
If I do not get any help I am going to complain at the Ombudsman
Regards
FW Moyses