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Write for Us AT&T Wireless customer service
1 (800) 331-0500
Best time to call is between 7am and 10pm daily
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1 (800) 288-2020
Best time to call is Monday-Friday between 8am and 7pm
U-verse TV or Internet technical support
1 (800) 288-2020
Available 24 hours a day 7 days a week
AT&T home security customer service
(855) 288-2727
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