Please remove me from ITC and refund me

MTN South Africa is still refusing to remove my name from ITC after canceling contract with them and paid them every cent.On 12 August 2025 I returned their router and paid every cent but their insurance continue to bill me and arrogantly put me on ITC for a mere R29 after trying to cancel this insurance fir the past months. I don't owe MTN and have exchanged emails with them to remove me from ITC and pay me my refund no one called or paid me and remove me from ITC. Whenever i call am being send feom pillar to post and am tired.