I want to change my plan but am only given the option to add a line. It's an all around better plan. Right now I only get 16GB for $50 and the new plan is the limited time 20GB for $39, but in order to get it I need to add it as a line to my current account.
If I add the new line, am I stuck paying for two lines? Or can I cancel the old $50 one and proceed with the $39?