Third-party charges are charges billed from non-CenturyLink-related companies. These companies provide a product or service, and then charge you through your CenturyLink bill. Sometimes these charges are completely legitimate, and something you agreed to. Sometimes they are not something you authorized, and in those cases CenturyLink is here to help. You can contact CenturyLink and request, at no charge, a bill block that will prevent some of these third party charges from appearing on your bill. You can also ask for unauthorized charges to be removed from your bill.
What kinds of third-party charges might you see? Some examples of these charges are long-distance services from non-CenturyLink providers, charitable contributions, or correctional facility calls. In order for these charges to be valid a customer must accept or approve them.