dismemberment? Is that where your membership is cancelled?
On a serious note, Vulch, my wife Mel has worked for a bank since the dawn of time and she says that your next move should be to go into your nearest branch and fill out a Disputed Transaction Form. Your bank can't act upon anything until they have written documentation to support your request.
Upon receiving this, your bank has ways and means of tracing and refunding your money.
Your bank has a fraud dept, who have extensive experience in this field.
Do you have internet banking with your financial institution? If so, you can contact them via the web. If not, go on your bank's website anyway, there will be a link for for lost or stolen cards, there should be a service 24/7, 365 days per year.
Mel reckons you will get your money back, but it's a pity that these hurdles have to take up so much time and effort.