Block a joyn contact
If you block a joyn contact, you won't receive any messages from that contact and file transfers are declined automatically.
Messages are filtered to the Blocked Messages folder in the joyn app, and read notifications are turned off.
In the BlackBerry Hub, tap
Tap Blocked users.
BlackBerry Hub and email
Type the phone number or name of the joyn contact you want to block.
To unblock a contact, tap Unblock beside the contact's name.