Unauthorised debit order and no assistance from the bank

Hello.

I have been getting an unauthorised debit order of R280+ from NP Legal1 for the past months. I don’t know how capitec bank authorised this because i don't remember authorising this debit order. Worse part it’s not reversible , i went to branch today and the consultant told me its “unreversible” and they can’t find out who it is on my own and he can’t stop it on his side and that I have to go to NP Legal1 and ask them to stop. I asked for the details for the company I was told to Google them myself, how does a bank authorise a debit order without the company details shocking.

As a reputable bank known for high security measures i don’t understand how this got authorised without it being confirmed with me on top of that it was made in reversible ?

Please help urgently to stop this payment and put my hard earned money back into my account.