Who I have the same questioned this topic

Bought Note 10 on alleged promotion (through online live chat - thankfully) to trade in Galaxy S8+ for $450 in trade in and $100 samsung credit, received phone with no way to return old phone and was told promotion only applicable if new line OR upgraded plan. BUT, was told by rep that plan did not need to change. See chat below - Verizon tells me that unless I upgrade plan, can't get promotion. Appears to be no option other than lawsuit.