Canceled Fibre but still paying

I canceled my Vodacom Fibre on the 21st of Oct. They work with calendar notice so looked at my vodacom app and statement today and guess what surprise surprise they are going to deduct money again. *** can you get your **** together. My Fibre canceled why is it still on my statement. It's been switched off. I phoned Fibre and everything gets escalated but nothing gets done. I've been with vodacom for years and get treated like ****