Items lost & won't be refunded? What?

I had bought the last 2 tiers of the limited Nightfall tier last month, and spent 300 coins, but after not getting the last 2 tiers, thinking that there's a connection problem or something, I've bought 2 times more just to be sure, but I lost my coins and got no items in return. Over a month, this has not been solved by EA, and I've opened several cases. Customer Support says they can't do anything about it!

Seriously?! How can you NOT do anything that I have a problem with? You took my 900 coins, and in return, gave nothing.