Lack of customer service

Worst company ever! They don’t respond to your queries - nothing. A month without a telephone line or adsl and still no response!! And when I call the call centre, it’s always the same response: its with the Cabling department and they’re going to assign a technician. It takes a month to assign a technician? Really? And when I insist on speaking to a supervisor, I’m promised they’ll call a supervisor at the Cabling department and call me back. Ha!! Yeah right! Not a single call. I don’t know what to do anymore