Unable to dispute debit order on Capitec internet banking

I noticed this morning that there was an unauthorized debit that went off my account of the amount of R1899.96. I am not able to dispute or even stop this debit order on both the app or internet banking and would like it to be reversed a.s.a.p.

I did not even approve a debi check for this debit and have no active contract with the company that debited me.

I would like this transaction to be reversed immediately. I thought Debi check was implemented to stop unauthorized debits from going off accounts but it doesn't seem to be the case here.