Anyone have any issues with AT&T on them placing you under a 2 year contract with no upgrade eligibility because you applied a corporate discount? I opened a month to month contract after winning an unlocked iPhone4 from my company. When I opened at the store they indicated it was month to month and I was eligible for upgrade pricing even if I applied a corporate discount once I got the number. I later applied the corporate discount online. I guess this placed my account under a new two year contract and removed upgrade eligibility for new phones. I just noticed when checking eligibility for the iPhone 4S. Has anyone had this problem before? The customer service rep I talked to on the phone apologized and offered me a $25 credit!!