If you have the slowest speed, you're on Lite, which is advertised at 256 Kbps download speed, or "up to 5 times faster than dial-up".
The advertised speeds on MTS's web site, or when running a speed test (such as through speedtest.net) will give you results in KILOBITS PER SECOND (Kbps). However, most programs on your computer, such as Internet Explorer or Bittorrent, will give you speeds in terms of KILOBYTES PER SECOND (KB/s) . You can convert between the two using 1 KB/s = 8 Kbps, so 256 Kbps gives you a maximum download speed of 32 KB/s. You mentioned in your first post that you're getting download speeds of 25-30 KB/s, so this appears to be right on par for your Lite internet service.
Lite internet is suitable for users who do browsing and email, but if you're planning on downloading, you really should consider upgrading to Lightning, which is 15 times faster and offers speeds up to 7.5 Mbps or about 960 KB/s.