888-624-5622 MCI Customer Service
This page has more information covering the phone number provided by MCI for Customer Service. There may be other ways to contact MCI and you can click here for the complete MCI customer service options.
- How to reach a live person:
- Keep pressing 2 through all questions. Took me 3 times.
- Hours of Operation:
- Mon-Fri: 7am-11pm EST
Sat-Sun: 9am-9pm EST
- Mon-Fri: 7am-11pm EST
- Description:
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