I've Been Banned By Wal-Mart.com

Made the mistake of trying to order something from Walmart.com. They cancelled my order twice saying there were problems with the payment security checks. Yet, both orders were using two different payment methods. On top of that, it took three days for their customer service to get back to me, and they just said they couldn't tell me what the issue was. Seems I am simply not allowed to shop there anymore. Not sure what type of business strategy they are going with.