Why am I getting charged for things twice a month and have no idea what there for

This is not Apple support and it is not an instant chat forum.

You posted in a user to user forum and we are all volunteers scattered throughout the world. We do not have access to accounts, but you can contact Apple here:

Subscriptions and Billing - Official Apple Support

Also see: If you see 'apple.com/bill' on your billing statement - Apple Support