Software glitch somewhere in the handoff of the information. I'd email them to confirm whether or not the transaction did go through.
On a related note, I saw a news story the other evening about some experimental Chicago trials of a non-chemo treatment that has shown some experimental success in melanoma tumor shrinkage. The doctor interviewed said that for melanoma that has metastasized into the lymph system, chemo is only successful for tumor shrinkage in about 15% of cases, while this experimental approach has achieved tumor shrinkage in about 60-70% of cases (I think, recalling from memory). This new therapy is based on immune system boosting instead of chemo.
I don't know if this story is about the same therapy, but it sounds like it:
http://www.boston.com/business/healthca ... ncer_drug/
A cool idea: flood the tumors with oxygen, good for the immune system, bad for the tumors. It's when you hear about ideas like this that giving to cancer research charities is so gratifying.
... trained by the CIA to accept vast quantities of information at high speed in binary code