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Yahoo does not have telephone support. If offers a help menu and sometimes, if you work through it enough, you will be given the option of emailing customer support.
The support phone numbers you see are all fraudulent.
Mercy
Yahoo doesn't have a customer service telephone number for regular members. You can use this link feature to work on solving your problem.
https://io.help.yahoo.com/contact/index?page=home&locale=en_US
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If you're a premium or business customer the number will be on your contract or invoice.
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The numbers you often see on Yahoo are SPAM. Don’t use them
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Don’t use : y_answrs_team@yahoo.com unless it is a really serious problem like : hacking , threats as otherwise they won’t respond