Board Thread:Roblox Q&A/@comment-7240228-20130326221131/@comment-26478620-20151125184041

UdoxasRBLX wrote: Ever since somebody begged me to rejoin his group after I left, I unfriended him, he sent me another request, declined, another request. I stopped answering friend requests at that point and left them sitting there.

Summary: Ignore all friend requests. you could put your friend request settings to no one.