Terrible line speed and customer service

I've been fighting with Openweb for over a month now because of the terrible line speed that either doesn't work between 9 and 5 and then opens up or a very weak, but somewhat usable internet connection. It has been a backwards and forwards battle just trying to get a somewhat usable line with them. I eventually canceled my account with them but have to wait out the 30 day cancelation period, but I am at a point now where I still have over a week to go absolutely appalling line that won't even open up standard web pages. It actually feels like my data connection is being throttled to open up for another user still using their service. What is going on? why can I not just go through the month with a working line while waiting this death sentence out? This is absolutely pathetic and I wont even be surprised if Openweb is forced to shut down. Your customer service is almost just as pathetic as your IS, please sort this out!