Originally Posted by
George1971
These sort of problems have been encountered and solved elsewhere. For example: To message a friend, first you have to friend request them. When this person received this connection request, they can accept it, or refuse or ignore it and never be contactable again.
Even if they once accepted and have received messages, at any time they can unfriend and block and never hear from them again.
The solutions are so easy. SuperCell should catch up, and do protective things like this, like enabling blocking of repeat offensive join requests.