I/we have had 4 or 5 cases in the last couple of days where we were disqualified after completing the entire survey. In each case we submitted a ticket and received replies within 24 hours, no excuses, just a "sorry" and they gave us the full credit. The surveys seem few and far between and I would guess we qualify for one out of four they send (we are in out mid/late 70s) so I have to make the ones we can finish count :-)