I got a survey about brokerage firms. There were multiple screens on each of 3 brokers. When I made it to 92% done, the next screen said the survey has expired! I am annoyed enough to send them a technical issue message and demanded for resolution.
Last time this happened 5 or 6 weeks ago they credited 80% of the rewards, saying this should not happen as the survey should not take in new participants when it was about to expire or about to fill up the number of participants it was designed for.