I bought a Galaxy S6 2 days ago, and returned it today after deciding I wanted a 64gb model. As I understand it, as long as I am under 50mb/50txt msg/30 minutes used I won't have any cancellation fees. I checked my usage and i've only used 17mb data and 3 txt messages, but have 63 minutes of calls, however all of the minutes were used during the unlimited weekend and evenings. and usage shows 0 out of 300 used. Will I be charged for the first month?