You may call Customer Service & Billing directly at 800-527-2318. Their office hours are Monday through Friday from 8 a.m. to 5 p.m. Central Standard Time.
To send a message online to Customer Service and Billing, go to MyChart to log in. Next:
Select "Messaging"
Select "Ask a Question"
Select "Customer Service Question"
Use the drop-down menu to select "Billing Question"
Type your message in the comment box.