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MCI

    http://www.mci.com/
    Global business and residential communications company operating in more than 65 countries.

MCI Communications Customer Service Phone Number (800) 444 ...

    https://mci-communications.pissedconsumer.com/customer-service.html
    Sep 22, 2020 · Contact MCI Communications customer service. You can call MCI Communications at (888) 624-5622 toll free number, write an email, fill out a contact form on their website www.mci.com, or write a letter to MCI Communications Corp, 1801 Pennsylvania Avenue NW, Washington, District Of Columbia, 20006, United States.Location: 1801 Pennsylvania Avenue NW, Washington, 20006, District Of Columbia

MCI Communications Services Inc - Company Profile and News ...

    https://www.bloomberg.com/profile/company/0124540D:US
    MCI Communications Services, Inc., doing business as Verizon Business Services, provides wireless services. The Company offers long-distance, local, wireless telecommunications, and information ...Employees: 1.1K

Customer Service - MCI

    http://consumer.mci.com/customer_service/index.jsp
    And with automatic payment, you'll save $1 off your MCI bill every month! Sign up for EasyPay. To mail your payment, send check or money order to the following address: MCI. PO Box 16801. Newark, NJ 07101-6801. TTI. PO Box 15043. Albany, NY 12212-5043.

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