Vodacom Not actioning cancellation request

I requested a cancellation of my contract on the 23rd of April but it was not actioned. I called again about a week later and I was told that the consultant I spoke to had system issues but those issues were resolved. The consultant told me that my ticket will get escalated. But now more than a week later no one has actioned my request. Now they are calling me to offer me upgrades instead of just cancelling my contract. This consultant that called now tells me I have to call Vodacom again to request another cancellation AGAIN.