TELKOM BAD BAD BAD

Im really unhappy with Telkom. I have a newly installed D-link (black) router and paid my first installment on the 30 November 2018. But now my internet is not working. I am strugling for more than a week now to get some help from telkom call centre. When I call the technical department (10210) they say my account is closed and I need to call sales. When I call sales department they say theres nothing wrong on my account and I need to call the technical department. I've used more than R250 airtime because free minutes doesn't work. I don't know what to do anymore. Not even the technician knew what to do. IM REALLY NOT HAPPY AND THINK MABE I NEED TO CANCEL MY ACCOUNT COMPLETELY.