Verizon screwing me???

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http://androidforums.com – I have a grandfathered 450 talk, unlimited text/data line that currently holds my Gnex. I tried to add a line online tonight in order to get the Moto X and keep my unlimited data. After talking to the online rep, he told me that I cannot add a line to my plan because I'm on an old "single line plan". So either I upgrade to the Moto X and lose my unlimited data or buy the Moto X at full retail. I have a dumb phone here that I was all set to put on the new line, then transfer the Moto X to my current line. If this is all true then is there no way for me to upgrade ( without paying (General)