Poor service and unauthorized debits

Recently ordered for a telkom sim uncapped through them account paid ***9 an amount of R249 6 January 2026, received the sim card thursday 8 January 2026. Woke up today to a debit amount of R425 and no one seems to can explain what the debit order is for and the debit date is the 27th of every month. I need explanation what the debit is about and the negative fee for the attempt to debit my account to be credited. I’ve only that sim card for 4 days and paid R249 and be debited again R425 yet monthly payment is R549