In response to M33K3R, I believe the refund was $10.60.
Much like the post of Lukesilver, I have no idea which sit&go or sit&gos contained the collusion.
I went to Spain for a week on an allinclusive holiday and the night before I flew, I had eight out of ten third placed finnishes. I found fellow internet Poker players at the Hotel and was bemoaning my badluck or lack of ability.
When I returned from the holiday, I found the email, which cheered me up big time. Two reasons for being cheered up, firstly Poker Stars seem to be doing their best to look after us and secondly, maybe that dreadful evening 8/10 3rd places wasn't purely down to my lack of ability !
Despite the refund I now only play in tournaments involing 3,000 players or more, and have faired quite well.