Cancelling of sim data contract sim

If there was zero stars, I would choose it. I am writing out of frustration. I had a data sim with Vodacom which I paid it up in 2023. I sent an email to cancel, I also called they confirmed the account been cancelled. I cancelled because I had reached the contract duration. I stopped receiving emailed statements. Then last year December I start receing the same invoices but they always indicate 0. I called Vodacom to notify them, I was sent from pillar to post trying to cancel this contract. Today 15 March I see I have a debit order from Vodacom that I know nothing about. Please assist I am so tired because now after all these 0 rands invoices then I received an email from MBD saying I have been handed. Please can someone assist me in this regard because non of the Vodacom shops can assist with my query. I am so frustrated because this thing has been going on for too long and I am not getting any joy.😡😡😡