Bad Customer No Care

I have been with them for awhile but all of a sudden I was battling to connect from 18h00 onwards and was spending my evenings on phone to the support team to assist. Once somebody got me connected for a few days and then disconnected. This occurred for a month and the last time the lady from support just said there is no way of assisting me further so I told her I would like to cancel. She said I can cancel but will still be billed for the month ahead. I asked how they could bill me for something that clearly is not working. I unplugged the router and instructed them to collect. They sent me an email that they will collect after the next billing cycle. This is for wifi that is not connecting at all. I had my guys deliver the unit to them and emailed that I should send them a bill for all the airtime and data I went through fort unit that was not working. Enjoying fibre which is far cheaper and a faster line