Unfair debiting

Been battling for weeks since 25 Sept to have vodacom fetch their router from my house as I originally had declined the offer due to the fact that I currently have an open line with Mweb.. Was told that I have until Feb 2021 to accept the offer but yet a router was delivered. Now they tell me that billing was charged and my debit order for almost R3000 was debited. Also it takes a full month to then process invoicing so I MIGHT only get debited 01 Dec. This is rediculous. Getting charged for something that I declined in the first place