I hate to give you bad news, but you just have to wait it out. I am absolutely sure you guys will be approved soon, they are working very fast and the visa bulletin is current for your PD.
We are very lucky this year.
I also talked to my congressman months ago before we got approved, (who actually happened to be a very good friend of mine and he used to be head of Homeland Security) but even him couldn't make any progress on my case.
Talking to Uscis will not help you either, you can try to talk to a Tier 2. Officer, but I wouldn't recommend that either, you don't want to piss them off :)
The best advice I can give you is to check your status every day, your day will come very soon.
I know it's frustrating and a lot of us are in the same shoes, but it looks like pretty much everybody will be approved in the very near future.
All the Best and be patient.