Unbelievably bad support

I have been a client for years - even before they bought out my previous service provider.

To summarise I have had no connection for the entire month of November, and have contacted the call centre more than 8 times. I find myself calling daily for feedback and get given the same instructions to reset the line myself... which I have tried numerous time. Now I get told a week ago its been raised with frogfoot and should be resolved in 24 to 48 hours. A week later my line is still down. After hours on the phone and getting nowhere i have requested a cancellation. I gave them ample time to resolve the issue. Not once did they offer to send someone to come have a look at my line or resolve it. I have asked numerous time to speak to a senior manager with no avail. I am now asking for a refund for services not received and immediate cancellation. You cannot possibly charge me for something that was not provided or inadequate support.

Please please please consider this before using Supersonic. They will waste your time and money.