Let me move this to the Accounts, Payment, & Plan forum for you, which is the appropriate forum for your question.
The Using the Community forum is for help in using the Adobe Support Community forums, not for help with specific programs. Product questions should be posted in the associated product community.
As to why they took more money, do you have a yearly subscription and did you just finish your first year of having one? Adobe charges an introductory price for the first year and then the price goes up to the normal one at the start of the second year.