Hi @lisboa
I apologize due to account security we are unable to go into your billing details here in the Community. I can however share some basic information on our billing process. For instance, accounts are charged based on both the email plan they are under and the contact level they are under. Having a large amount of contacts will increase your pricing. Have you tried bringing your level down by deleting bounces or contacts who haven't opened your email over a long period of time? If you are under our Email Plus plan you can downgrade to our basic Email Plan. We also offer discounts for prepaying accounts and non-profits. If you have any further questions or concerns please call into our Billing Support directly. one of these agents can help take a further look at your pricing.