Gannuscio, you can keep talking to the lackeys at the call center, or you can poke yourself in the eye with a sharp stick - same result. You'll probably get different answers every time you call. Heck, most people here are experts and we are disagreeing. (Although I have yet to see a credible answer as to why it should be deemed in 2014..."practical" is not credible, IMO.)
I don't have a better way to handle it, but be prepared to spend a lot of time on it. You need to move up the chain somehow to someone who understands a bit about the Code and Regulations, and give them the cite for Reg. Section 1.72(p)-1, Q&A-10(a), and ask them how they square their reporting with what the reg says. (Don't refer to the FAQs which support 2014 taxation.)
I guess the other option is to duke it out with the IRS and try to prove that the 1099 is wrong; that might actually be your best bet. I am chuckling when I think of Charles Schwab trying to correct a 1099 issued for 2014 and then issue one for 2013...never gonna happen. If something isn't right when it goes into their system, it's nearly impossible to fix.