Bad service

I used a Vodacom mobile data SIM card for a 2 year contract. Which they deducted on time without issues . My contract ended in November 2025 , when I call to say they must not renew it due to network coverage , however I was told they will deduct end of December because I ddnt gave them a one month notice this was in November 2025 . I ddnt fight and allow the funds be deducted which was R380. I even got a message that the sim card is now a prepaid and I never used the SIM card again. To my surprise , Now end of January 2026 they deducted money from my account when the contract had ended and the sim card is not in use. I never encountered this problem when I previous used other networks contract data SIM card …. Is this how Vodacom treat their clients who were faithfully to their service??? Kindly refund me my money …thank you