Unauthorized Debit Order

Vodacom keeps on loading authorised debit orders to my absa account and I can get assistance from Vodacom as they keep on saying I must speak to the bot. Sady I can reverse this debit as it is ovr R500. I am concerned about my credit rating as this in a long run will have an impact.

Absa: CHEQ4850, Sch t, 03/01/23 SETTLEMENT/C - ACB DEBIT:EXTERNAL, VODACOM *** I***, R-811.79, Available ****. Help ***;