Upgrade Cancellation nightmare!

Good day, I cancelled a contract done as an upgrade with Cell C two months ago and it is still not sorted out. I called Cell C 6/10/2022 to notify them of the cancellation on the day I received the phone. The phone was not what I was expecting and hence my cancellation. The phone was picked up and returned to Cell C. I even sent an email to Cell C on the same day indicating my cancellation of the upgrade and to keep my current contract. I even called Cell C and requested for my current contract to be kept as is so that I could upgrade to the phone I wanted. To my surprise the upgrade was not cancelled yet the phone was returned. When I tried to do an upgrade online, I am informed that I can only upgrade in 2025! Also, Cell C debited my account for the full amount for the new upgrade on the 1/12/2022. How is that Cell C can do an upgrade within an hour but to cancel a contract it is such a schlep! The consultants will assure you that we have the right to cancel but will stress “before the 5 day” clause. I am now stuck with an unfair upgrade with no new phone and I cannot do anything about it! My numerous calls and emails to Cell C is falling on deaf ears, so I asked my bank to reverse the debit order. I gave Cell C enough time to sort out the issue. Now that I reversed the debit order, I am now receiving SMS's indicating that I haven’t paid my account. If Cell C cannot sort out this issue, they can cancel my contract and I will go elsewhere and get a new contract. This is so frustrating! Kind Regards Jenny Naidoo