CONTRACT CANCELLATION

I was called by a representative of Mondo on the 14th of July last year offering an offer on one of my existing contracts with MTN not knowing it will automatically change the duration of the contract, and they did not mention anything about it. Following day I realized as I received a new contract agreement from MTN, I called immediately and cancelled said upgrade and was advised that it was successfully cancelled. Now my contract end date is coming up and I'm told it is not yet time to cancel, meaning Mondo did not cancel even though they had confirmed such. I called them last week and they told me they do see a note that I cancelled, but their system does not reflect it yet so they will escalate the call and get back to me. I have not received any call and today I'm told the call is still being escalated. My contract is supposed to end on the 21th of May 2023 and since this was a Mondo representative, MTN cannot assist! I need this contract cancelled, Mondo is very unprofessional and ****my!