The most convenient way to manage your MCI account is to handle it yourself - online. View your invoice, make a payment, upgrade your service, and much more - whenever you like, 24 hours a day, 7 days a week. With MCI, managing your account online is fast and easy. If you need to speak to someone right away, our toll-free Customer Service numbers are accessible below.
If you are an MCI Business Complete customer you can relax knowing your account is always up-to-date. Choose an EasyPay automatic billing solution using your credit card or direct debit, and you'll save $1 every month plus earn up to 60 free minutes!*
To mail your payment, send check or money order to the following address:
Your MCI account offers convenient message notification and retrieval options. Receive new voicemail message alerts via your pager, cell phone, or e-mail. Access your messages wherever you are, by phone or on the web.
Get everything a small business needs to set up shop, stay connected to clients and increase productivity. Calling plans, high-speed Internet access and lots more. For companies with fewer than 20 employees and/or one office location.