I just changed my plan - I paid $144+ for December, but didn't use the full package (X1 Starter, no contract) the whole month. Downgraded to limited basic + Blast! (current promo for a lot less $$ since I don't watch a lot of TV, but do stream). They still want $144+ for next month - Jan.! I was quoted a much lower price, when does this kick in? I was also told that I would be "credited" for the remaining time that I didn't have the full X1 Starter. Do I really have to wait a full billing cycle (Feb)?