I can understand how important the billing on an account is, and apologize for any confusion there may be with the charges you're receiving. Have you recently increased your amount of contacts? Or upgraded to our Email Plus plan? Though we are unable to go into an account's billing details through the Community, these are the two most common reasons why pricing will increase. If you have any further questions on your billing, please call into our Billing Support directly. One of these agents can help find the answers you may need.