A Resp Org’s monthly payment is due by the 15th of each month. Resp Orgs have the option to pay an invoice by Wire Transfer (Fedwire), Automated Clearing House (ACH), by E-Check or Check, or by Credit Card. Additionally, invoices may be paid using a E-Check or Credit Card by entering the payment information on the Somos® Portal Website (portal.somos.com) in the “My Info & Bills” section and then select the “Invoices” menu item. If a Resp Org needs to file a dispute regarding an invoice, the Resp Org's Billing Contact can submit it in the “My Info & Bills” section and then select the “Dispute an Invoice” menu item.