Well, maybe one of their staff got wind of your activities and must have read this post of yours and that is why they decided to blocked your accounts. anyway, I believe that one's generosity should never be exploited as there are now many ways to confirm if one is following the right mechanism. Plus they can impose some form of KYC to make sure they are not dealing with fake people or with bots. I am advising you to hold on to the BTC you got since it would soon be exploding in value...maybe even more the former BTC ATH of 60K$.