I already have contacted Team 17. However, they will dump it back on Microsoft since there are a lot of people playing it with no problems, thus they'll claim that the game is fine and it's Microsoft's problem distributing it to me, or something wrong on my console. Microsoft will do as you have done and say "Not our product" and dump it on Team 17. in the end, I won't be surprised if nothing gets done and I'm out 1200 MS Points. I'll demand my points back, of course since Microsoft is the one who took them and did not provide a working copy of the game.
When you buy a Sony product that is defective out of the box, you take it back to the store you bought it from to get your refund. Sony doesn't refund your money, the store does. In the same way, Microsoft took my MS Points in exchange for a defective game, thus Microsoft should refund my MS Points if the problem is not fixed. My older boys are wanting Minecraft or the Halo 4 Mapp Pass thing, so the points will get spent again and Microsoft won't lose anything
I want wither a working Worms: Revolution or my 1200 MS Points back. My first preference would be a working version of the game, however, since al of my boys can play it.