I want to upgrade my account with a data plan and get the new Thunderbolt...but when I'm putting my order together, it's requiring me to select an extended warranty plan. I have never needed an extended warranty before (I'm careful with my electronics, judging by my 6 year old mp3 player) and I don't necessarily want to add it now. Can I place my order with the warranty in there, then cancel it in a month should I desire?