Case # with No Response after 1 month. Order Keeps "Pending validation" Then Cancelled.

I've tried to place an order for a digital download 6 times. Each time I place the order, it immediately says "Pending validation" and then sometime in the next few hours my order will be cancelled.

When this happened the first time I tried to replace the order. Then it happened again, so I contacted support. I got an email confirming my case #. When I clicked the link in the email to check on the status of the case, it says "No support request details found. If you have just created the request, please try again in a couple of hours.". It's been over a month now. I have since tried to place the order every week or two for a total of six times. I've tried to email support again over the issue, but now I don't even receive the email confirmation with a case number. There's just no response, and I'm not sure how to get a hold of support to get this issue resolved.

Any help would be appreciated.