Supersonic will not release line after cancellation

I cannot explain the frustration I have with dealing with Supersonic. After being transferred to them after the Nepic sale / buyout, I have had a terrible experience with them. I subsequently cancelled my service with Supersonic after having numerous issues with them and receiving extremely poor customer service. Since cancelling the pain has not stopped. The line should have been cancelled and released at 12am on The 29th September. I am moving to Vox, but this cannot happen as Supersonic have not cancelled or released the line for 20 days!!! I have been without internet for some time and can only look forward to more time without internet as I cannot be transferred to Vox's service until Supersonic has released the line. I have called numerous times and have been **** to or received no confirmation that the line has been released. Absolutely disgusting service from Supersonic.