Adding domain blocks

app/services/block_domain_service.rb

@@ -0,0 +1,13 @@
+class BlockDomainService < BaseService
+  def call(domain)
+    block = DomainBlock.find_or_create_by!(domain: domain)
+
+    Account.where(domain: domain).find_each do |account|
+      if account.subscribed?
+        account.subscription('').unsubscribe
+      end
+
+      account.destroy!
+    end
+  end
+end