I opened a support ticket days ago, and received no response from Steam.
I opened a support ticket asking for a refund yesterday, and still no response from Steam.
I also opened a ticket with ED to refund the BS2 upgrade I purchased to use with BS1 from Steam so that I can order the full version. I have had no response from them either.
I am really disappointed. I buy almost all my games from Steam, because it is convenient and I don't have to track keys/codes and download sites from several different sources. Based on my current experience, I am seriously rethinking my decision to buy Black Shark, and I am losing interest in other DCS products as well.
UPDATE: Steam just refunded my purchase of DCS:BS1.
So now I have an upgrade copy I cannot use, but at least it is progress. I am going to go ahead and buy the full version of BS2 from DCS and hope for a refund on the upgrade.