I have the orangeicon Home Max broadband, and for several of months it was fantastic, but from the time when I was having high usage (I had download over 100 GB a month) twice, Orange decided to cut my internet speed to 0.5 MB in peak time (6pm - 12pm), but it is actually cut all day. Now the more interesting part, a few weeks ago someone from selling team from Orange called me and offered a new contract. If I will decide to sign it I will get: half price of my monthly payment (12 instead of 24 that I was paying now), and my speed limit will be taken off, so I will have my speed up to 8 MB. I asked them a few times about this speed limit because it was very important to me, and they was very sure that it will be off when I will decide to take this new contract. So I did, and nothing happened, the speed was still 0.5 MB, I called customer service and they sad that it's not up to them, sad that BT is responsible for my broadband speed, and that BT is cutting my speed down.

Please help, what can I do to end this contract??