Disgusting service

I had a requested an upgrade on my existing router contract due to needing more data for work purposes... Vodacom offered me an upgrade package which I accepted but it would not be activated until 1 March so I called back a few days later to cancel the upgrade as per reference *** because I found a provider that could assist me immediately. To date the cancellation has not been actioned, instead the upgrade is activated effective 1 March 2021 and when I called in today to query I was transferred from pillar to post with no one knowing what to do. Please assist as I am not willing to accept that upgrade on the contrary I am also going to cancel the old router contract.