Most likely this information is edited or in the theme settings, which in turn is located in the WP settings, or widgets. Look it is possible to change the tag which includes a phone. If nothing there, then go to admin - appearance - theme editor - select your theme and right column files search for a file or files with the file name header, head (must be the php file or js). Well, then when you find the file at random to change the code. Sebacates only.