I don't like to complain unless it becomes absolutely necessary that I do so. I am very frustrated with the amount of glitchy surveys that I have encountered lately. The latest glitch occurred today. After fully completing a survey, on the last page I was given a We Have No Surveys Available Today page. No surveys? I just took one and it even Congratulated me for my completion. I have been doing these surveys for a year and believe me I've let a lot go both in frustration and money. I am just disappointed in the quality of the surveys sometimes.
You said you completed the survey and even got the congradulations page saying you have completed it. Did you wait before you closed that page to give the computer systems to communicate with one another? I usually wait up to 10 minutes and check my account page every couple minutes to see if the survey has credited.
If it doesn't credit in 10 minutes, I take a screen shot of the congradulations page, paste it to my Paint software, add some comments re who, what, when and how much on the page and save it as a JPEG picture with a name that lets me identify it later (ie MTCpoc082011.jpeg).
If I haven't received credit in a couple of days, I'd send a ticket to support with the jpeg picture. May not get me credit, but it does give FC something to work with.
You may only complete one survey from one survey company in any 24 hr period. If they offered you another survey, you either didn't qualify for the survey you thought you completed (bummer), or they have a glitch in their system and I wouldn't recommend doing another survey. If they can't get the first one right, no guarantee they'd do the 2nd one any better.
If they said, they have no more surveys, it may mean they did recognize that you completed the survey and you are no longer eligible to take another until 24 hrs have elapsed.
Hope you received credit for the survey you completed.
I also hope you make a practice of clearing your cookies and temp files BEFORE you start doing surveys for a given survey provider.