User blog comment:Silentcow/Boss timer error, wheres my refund!/@comment-5499190-20130406230636

Just contact Apple directly about IAP (In App Purchases) and if you explain the situation clearly (that you paid for the event items, but there were constant errors and thus the event items were wasted) then the Apple representative will understand and say something along the lines of "usually we do not refund IAPs, but on this occasion, we will process an exception to the Terms and refund you".