Hey @Tapo73 !
Welcome to the Community. 
Is it possible that there were some prorated fees on your first bill?
This often happens when the activation date doesn't match the date of your billing cycle, and you should be able to see those details when you download the bill PDF from your account.
If you'd like us to take a look, you can contact us here for assistance.
Alternatively, we can also send you a PM through the Community, should that work best for you. 
