Why do emails addressed to one Yahoo account go to another?

[Rosemary]

First account is being closed by former broadband provider so set up new one and informed all contacts. However, emails sent to me by my employer to new address arrive in inbox of old one although correctly addressed.

[Trooper63]

You can submit various problems through this link.. http://help.yahoo.com/l/us/yahoo/ysm/ts/…

In addition, this is one of the best links to contact Yahoo
http://io.help.yahoo.com/contact/index?y…
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You can use this link for options to contact them
which includes EMAILING a Customer Care Rep
http://bit.ly/YahooSupportHelp
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You can now contact Customer Care on Twitter
Once you start and tweet your questions you can access them
and see if they have been answered by clicking on "ME" when
you are on the site.
https://twitter.com/YahooCare
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And you can contact them on Facebook.
https://www.facebook.com/YahooCustomerCare

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Yahoo customer service telephone no's
800-318-0612
866-562-7219
408-349-3300.
855-837-9965 ...

Customer care for UK & Ireland..
http://help.yahoo.com/l/uk/yahoo/mail/or...
Yahoo customer service telephone no 0870-352-2000