There are basically 3 or 4 methods to remove ads banner in Yahoo mail. These methods are:-

1.      CLICK ON HIDE BUTTON TO REMOVE YAHOO ADS

2.      UPGRADE TO YAHOO MAIL PLUS VERSION

3.      INSTALL AD BLOCKER ADD-ON

4.      INSTALL GREASE MONKEY ADD-ON

To know in details about these methods read given below post link & if you want any other solution of your Yahoo account problem without waste time dial Yahoo contact number +1-888-259-9422.

Read More Here:-

http://webtoolsdepot.com/cant-tolerate-banner-ads-yahoo-mail-anymore-get-solution/

Yahoo Mail Support Number:-

+1-888-259-9422 (US/CANADA)                                                               

+44-800-051-3717 (UK)

+61-180-082-5192 (AUS)