Contract Cancelation dispute

I have been a client of Vodacom for more than 20 years, the last 4 years I did not review my contract because of our emigration plans, I tried to cancel my contract December via email to only learn I must contact cancellations, In January we spoke to cancellations and they advised that the contract cannot cancel due to it being on a Sim only contract. After a discussion explaining that we did not consent a new contract no proof could be given that I renewed any contract. The consultant then stated they will log an investigation and provide feedback, also she will annotated that my Husband will liaise with Vodacom as he is the account payer. Till date we had no feedback when my husband enquired again dailing me in in the Netherlands we were told we must now investigate it ourselves and call a third party company that upgraded her number (without consent) We rejected the suggestion as It is not fair that we should now try and investigate what is clearly a vodacom contract and vendor dispute. Till date we have no resolution. My Husband in South Africa has tried many times to contact vodacom to resolve, he has now been told that I must do all the talking and that I now must call them... I am not able to call during the day and he has said he is the premium payer and that the notes on the system should have been placed that he can talk on my behalf... this is still just going nowhere. My husband canceled the Debit order because the contract is ********. We are now in arrears as a result and he still is not getting anyone from vadacom to resolve this matter