MarkG21 said:
Yes, a pro rated charge is normal. You should have a showtime disconnect credit that was prorated and then a showtime/starz charge prorated.
The real question is did you receive an $11.01 credit for the 2 for 1?
Yes, that is the way it works. Your bill should show a charge that includes both Starz and Showtime, and it should also show an $11.01 credit for the 2 for 1 promotion. And, if you are in the middle of your billing cycle and if you already had Showtime, it will likely also show offsetting prorated charges and credits.
When your 3 from months are up, if you call to cancel the Starz, as soon as you do, the option to get another 3 months of the 2 for 1 promotion will show up again as being available to you in much the same way that the 3 free months of HD Extra Pack will keep showing up as available to you.