puropaisa,
Did you make those "50" tests all from the same location? Or all around your area (going to work/school, home, etc...)? Did you do them at different times of the day? And over how much of a time period (few hours, few weeks)?
Maybe your house is just in a bad spot, coverage wise, or you are checking at a time of day with a lot of congestion in your area. Or maybe they just had an issue with one tower one time...
Because those speeds are really low. For example, I get consistent minimum 1300 kbps up and down, and very often (and more and more areas all the time) getting up to 5 mbps down and 2-3 mb up. I am in Florida though, although I hear reports from some markets with even faster speeds than that.