Yikes, what kind of card was it? We had no issues with a BOM Mastercard 3 times last year. Wonder if something changed? Was it walmart that cancelled or was it your cc company thinking it was fraud?We are en route. Tried to place a WalMart order today. It took 3 different (Canadian) credit cards to finally get it accepted. It was cancelled within 10 minutes and they hold a charge in your card. We are now starting our vacation with a huge dent in our card while we wait for a refund. And we have no groceries being delivered.