My advice is to stop complaining. You are getting unlimited data. Even with the slow speeds you download a huge volume of data in a month.
I recently switched from my Xtra Adventure plan (FS/128Kbps 10GB/Month) to Orcon (FS/FS 15GB/Month) and have seen a huge increase in download speeds and improvement in ping times. For the average download I get in excess of 650KB/sec and torrents average 250+ KB/sec.
Check these BT speeds out (click to enlarge):

My suggestion is if you want decent speeds to switch to a Pro plan and pay for what you use. Switching ISP can do wonders. With Xtra I was lucky if I went over 4Mbps. With Orcon I mostly hit my lines maximum speed.
I should add that I'm quite a distance from the exchange: >2Km
Thought I would share my experience, just to show it's not all bad out there.
[Self edit: spelling]