HomeHelpAccount and BillingWho do I contact with questions about a bill? Account and Billing Who do I contact with questions about a bill? If you are unable to find the information you need in your online payment history or open invoices, please call us at 563-263-2631. Related Questions Verifying Your MPW Account What browsers are supported to use online bill pay? Do I need to register to pay a bill? Back to Account and Billing