Don't worry just yet. Time frame is still OK for a large package through the Christmas, mayhem. As there seems to be a commuincation problem with RCCommand don't worry too much about that either. You are not alone in this regard.

10 -14 days is pretty normal for mail of this size so that in itself should not upset you too much.. There are more places then just RCCommand to buy tanks though if the lack of communication is stressing you out.