Online upgrade and cancellation nightmare

Doing an online upgrade with Vodacom is a nightmare my contract was due for an upgrade so I app**** for home internet during black Friday November 2023 which was approved instantly and the router was couriered few days after but Vodacom didn't send me any data that's where my nightmare started at first no one knew why I didn't get any data someone even advised me to put in my old Vodacom simcard into the router and it'll work but nothing no data so I called again until someone told me that I'll receive data by January I then told them to cancel it since then until now the 1st of February 2024 the contract is still active and they have debited my account, I have called Vodacom thousand times but it's still active all they is"we have sent an email to online department they will contact you" until today no one ever called me what a useless network I regret doing that upgrade, please cancel your contract and refund me I did the cancellation during cool-off period.