That's the way the Survey cookie crumbles.
Out of 10 or so surveys I clicked on this morning I got to complete 1 (105 credits) and got 5 credits from each of 4 others - 20 credits for those - for a total of 125 credits from surveys so far today.
I played 1, 5 credit SocialVibe video and 3, 2 credit RadiumOne videos for an additional 11 credits.