Not really uncapped

I recently moved over to a uncapped ADSL bundle only to have my line shaped to the point were it is un able to browse web pages. i do down load a bit but not enough to warrant be shaped. If I have downloads and upload are even near 70GB this month its a lot. I i have left faults on the website and went into the your store to resolve the matter, only to be told its because I'm abusing the line. I then asked to cancel my data plan and calling plan as I want to try a different ISP. this led to them telling me that only a manager can cancel my calling plan because I have a 24 month contract. I would like to see were i agreed to this contract. as i will not pay the penalties that will arise from the cancellation.