WTBA Contact Type
$meta_query = array( 'relation' => 'OR', array( 'key' => 'wtba_contact_type', 'value' => 's:4:"main";s:3:"Yes"', 'compare' => 'LIKE', ), array( 'key' => 'wtba_contact_type', 'value' => 's:4:"main";s:2:"on"', 'compare' => 'LIKE', ), );