Bad customer service

2022 of December I signed up for home uncapped WiFi with MTN (contract was for 24 months ) on the 5th of December 2024 at 13h17 I call MTN customer service to cancel my contract because it was due for upgrade and I was transferred to retention department for cancellation. agent that assisted told me she cannot assist me with cancellation she told me to go to MTN store and bring my wife boxer for cancellation ..I questioned her why do I need to bring WiFi box because I've been paying for it and it not month to month cover she told me that how cancellation is done ...on the 10th of January 2025 I went to MTN at mega city they told me I need to cancel via call centre number and there is no need to bring the WiFi back it not month to month ..I call the call centre again while I was still at the store , I explain my story ..told the consultant that was helping me to cancel with immediate effect as I was informed with the incorrect information. After cancellation he did not explain the terms and condition of cancellation , as to what happens if you cancel middle of the month ..he only told me my contract will be cancel effective from 10th of January ...today I receive notification from my bank ..MTN has debit full amount for February were as I was suppose to be charged pro rata from the 1st of Feb to 10th Feb 2025 I need my refund ..MTN need to train their staff they don't know the product they selling to the client they are very ***********...I'm very disappointed with the service and they rude staff