This may be your own personal experience and it could also be possible that your account has been penalized in some way, but this is not the general experience.
I have tried many survey sites and this is by far my favorite. I rarely get disqualified from survey, but it does take some time to accumulate points. If you like watching vidoes you can go to hideout t.v. The points you get for watching vidoes can be transfered to grab points. They transfer pretty much instantly.