Poor Service: Supersonic Fibre

I have been trying tirelessly to reach Supersonic regarding a router that i purchased at the end of November which to date os still not working.

I have not received feedback from anyone as yet. I called in to cancel the service last week and as usual, i did not get any joy. I sent through an email to their cancellations department and i received an automated response.

I am at my wits end. I just want this nightmare to end and cut ALL ties with Supersonic.