I wouldn't say it was as good as that! I had a similar problem some time ago. I am with Virgin and they reckoned I should be getting 20 meg download. They were very good and replaced the modem, since when the speed has improved dramatically. If your modem is old, it might be worthwhile replacing it
I was the same until I complained to my provider, I now have an up to date high speed hub and I am getting 33.84 mbs Download and 1.91 mbs up load, checked on Speedtest.net