Questions about billing will need to be resolved by the Customer Support team and cannot be resolved on the Community.
To contact Cloudflare Customer Support, login & go to https://dash.cloudflare.com/?account=support and select get more help, make sure you select Billing as the category. If you receive an automatic response that does not help resolve your issue, reply and indicate that you still require assistance. And, please share your ticket number here so that we can track it.