Mtn v bad service

Mtn is the worst network provider i know when it comes to their service, They called to sell their rooter on line i took it that was 2023 and i was told that if o do not pay they will not load data and i will not be charged, i tried to cancel they refused they said i need to pay firsd and i couldn't, now my name is bad I cannot take a loan I hate them as I havey a disable daughter to buy chair for her