Rain dispute

I bought the rain 101 and they said i have 5G coverage and when i connected the router it only had 4G coverage and they said they will sort it out and may the debited twice and i did dispute it and also requested that im canceling my service with them. June got an sms saying they tried debiting for june and i called that i canceled my service now this month of may they debited R595 and i called and the consultant is telling me that my service with them are still active and i told the consultant to go back and listen to all tbe calls that where recorded.

Now for me to cancell they want R595 for the month which i canceled and their router and i told the consultant that for me give back the router please sort out my account.

They just debited R595 from my account im not going to hive them the router

Why are service providers giving us a hard time when we want to cancel