Why would Blizz lock your account for reporting a problem?

I reported a problem with an order I made earlier today. I had just paid for the new Hearthstone bundle, did the usual log out and log back in to open cards. However no cards were in the shop to open. I did not get the bundle. I can see the charge went through, but I did not receive the cards. SO I posted to support and I received a response that they would refund (which doesn’t address the problem of actually getting the bundle. I don’t mind paying for it, I do mind not having received what I pay for.) Since they responded with the promise to refund and no instructions as to how to avid the issue in the future, or what caused the glitch, they then locked my account. No warning this would happen, NO response to ticket since. I tried to update the ticket twice since then but have been ignored. Can someone tell me why my account was locked and why? This is ridiculous. Is this a normal response to this kind of issue?