Please note that any chat abuse issues should be first of all referred directly to your kingdom's chat moderator. Moderator has a special 'M' icon next to nickname in the list of Kingdom chat members.
If you receive foul language messages to a private chat, please use the Black List option in order to block the sender.
If you are being abused in the kingdom chat and the moderator does not take appropriate measures, please take a screenshot of the abuse and send it either to Support (with your email so that you can attach the screenshot), or to the Facebook Community page via the private messages option.
You can use Lightshot or any other similar service to take a screenshot.