Cannot change users primary email address and i cant change display name

Thanks so much for taking the time to reach out to us regarding your online account and usernames. I very much appreciate your patience and greatly apologize for the delay in our response. I know how important the services are to your business and we want to do all that we can to assist. I can understand how frustrating it can be when trying to update the information for your employees. I would love to ensure that we get this issue with the usernames resolved. Can you please reach out through  https://comca.st/36z6v6x with your first and last name, business service address and account number or phone number? -Michelle