Late Cancelation

I had a data contract with MTN which I stopped using on the 4th of Feb 2026 and returned their router to MTN Woodmead on the 9th of Feb. They have debited me for both Feb and March despite me not using their product. I would like for this contract to be canceled with immidiate effect and that I should be credited for both Feb and March. The line was already on month to month when I stopped using it. RMS***. Number ***. ID ***. Contact ***.