Vodacom debit order returned after cancellation and is double the ammount now too

I originally submitted a request for a fibre installation from vodacom and was informed that the fibre would be installed within the year as the actual fibre was not available in my area. Vodacom sent me a router with a usb ****le and a sim with data as a temporary measure until the fibre had been installed. Almost 2 years later the fibre still had not been installed in my area and I canceled my contract via ***. I am now seeing debit orders from vodacom and the money is being deducted from my account. I no longer have access to the sim/number and get absolutely 0 invoices from Vodacom. Everytime i try and contact the cancellation line I am prompted to input a number (which I dont have access to anymore or know) and am at a complete loss to find out whats going on. I have the account number for the contract but thats all and im honestly so fed up at this point.