This is infuriating. Legal action must be taken in order for them to at least give a definite statement as to why they blocked your account. If they are inconsistent on their updates, something must be wrong on their side and not yours. For as long as you haven't done anything legal or breaking their terms of service, you're good, but then again we're talking about 1200 BTCs in here and that's not a small amount to not be worried about.
And on a quick note, try to save a copy of their terms of services too, just in case.
In the end, binance is a globally acting company. They won't steal your funds and risk their reputation.
One can never be sure these days, knowing that several 'reputable' exchanges have done exactly the same to their customers (Mintpal, anyone?).
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One more thing, this should go to
Service Discussion for appropriateness and more visibility towards service-related issues and concerns.