I switched from the $45 plan that had 500mb in between my cycle (April17-May18) to the $45 1G plan, now in my May bill that I must pay on June 12 the total cost is $83? Why? I checked my E-Bill and it shows that I am being charged for the April17-May18 (The 500mb is $22 and 1G is $23) PLUS May 17-June18? Why am I being charged for May to June on my May bill? BACKSTORY: I am on a Tab originally for the BB Curve 9300 but I bought an unlocked GS3 and then switched to a unlocked iPhone 5.