What the Disney phone person told you is nonsense. There is no such thing as having the shipping company hold something for 'safe keeping'. I find that some of the people you can get on the phone from Disney are very helpful/knowledgeable and make an effort to look into the questions you ask. Others seem lazy or poorly trained and make ZERO effort to look into issues. Rather then do some research, they just seem to make up random/wild guesses and know you have no way to ever get them back on the phone so it becomes like a game to them. I would call back and get someone else on the phone who knows what they are talking about or try the online chat feature.
Is picking up your bands at the front desk an option?
Is picking up your bands at the front desk an option?