Disloyalty of MTN

I took online contract on 03 December 2025 and the device delivered on 05/12/2025. On 08/12/2025 I cancelled the contract within the calling off period . On January 2026 I paid my existing contract and not paid the cancellation fee and prorate fee as I did not use the property. I have been communicating with MTN since 08 January 2026. To date MTN has not resolved my case, instead, they have suspended my 3 existing contract.