I know this thread is sort of old, but thought I'd update with my resolution.
I had not found time to call and check on the certificate, so right before we left for WDW (end of May/first of June) called and "scheduled" time to use my certificate---no problem--everything seemed fine.
Our first day at WDW I called home to check voicemail and had a message from Sammy Duval. "Please call about schedule". I called and was told "IBid sold more certificates than authorized and could not honor". SD did offer 20% discount, but I didn't have that kind of extra money and was NOT too happy!!
After we returned from WDW, a couple of weeks passed before I was able to give gettting my refund my FULL attention. When I did, I sent an Email to IBid FIRMLY requesting a refund and expressing my disappointment in them and SD. Ruined a surprise for kids, etc, etc.
Thought I was going to have to FIGHT, but imagine my surprise when I received an Email apologizing for the problem and advising the refund (credit to my credit card) would be processed "right away".
Even more of a surprise was the fact that it happened.
I received a refund and verified the credit a few days later.
Perhaps I owe a "thank you" to someone (maybe nuthut) for going the first rounds with IBid and therfore making the process a little easier for me.
Just thought I'd let anyone who may have not received a refund know that I did get mine.