Only solution is to ensure all previous channels/bouquets are selected before submitting. Also u look final cost closely before submitting as any channel deselected will cause lesser Total price...I have noticed same issue in d2h, if we add one channel to existing subscription some previously selected channel or bouquet deselected but it was charged forthat day. Now I have to select the same thing to my subscription, they will charge you for the same day second time. This is the software bug they have