add page destroy callback

app/models/page.rb

@@ -34,6 +34,10 @@ class Page < ApplicationRecord
     PageService.genernate_user(user_id)
   end
 
+  before_destroy do
+    PageService.close_site(user_id, identifier)
+  end
+
   before_save do
     if state_changed? && state == false
       PageService.close_site(user_id, identifier)