With the BOGO special being offered with the new iPhones, you have to add a new line service. In theory, could someone add a new line to take advantage of this deal, and then cancel an existing line that has no payment plan attached? Would it be possible to do a swap of numbers, and then cancel the old line that has the new number? Or would you have to keep the new number as well. We've been customers for well over 20 year and would hate to lose a phone number that is that old, but missing out on a deal that a new customer could get isn't right either.

Thanks.