There's something really wrong with your internet, then.
Telus' packages are 256kbit for 'lite' (you're above that, so that's out)
Then up to 6 for 'high speed' (average one)
Even if you're distance-dependent you should get the 1.5mbps, which works out to around 1200 kbps on a speed test (1.2 if it's measuring in mbps)
If you can access your modem, see if you can find out what it's sync rate is (should be listed somewhere perhaps "downstream rate" and "upstream rate")