Recently whenever i logged into Facebook, a message notification popped up and when i clicked to reveal it, so that to see , who left me message, it turned out that it was sent by a group. Several members of a group were saying random meaningless things.
If you felt helpless as i felt, here is a quick fix for this problem.
# Step 1- Click on the settings and then click on Mute conversation.
Now select Mute Conversation for Until you turn it back on
Thats it, You are done