I need an explanation

Hi, I am not certain with Vodacoms system, I took up a data contract in November, they had a Black Friday promotion which offers 600GB for R299. Upon delivery the consultant who called never confirmed the prorata nor the service fee that'll be charged which now reflects on my Credit Bereau that I missed payment during December, it was escalated and confirmed that it will be disputed which was disputed. Now, yesterday I received a Debit order mandate that needs me to approve from Vodacom with same reference of the data contract that I currently have. What do I do? It was initiated during November 2021 and only sent through yesterday with an amount of R1333,33.