Are any of the following issues akin to what you have experienced or are experiencing when trying to contact other players:
"Blocking a player prevents them from doing so:
- Interacting with you via wall post or private message
- Sending you friend requests, game invitations and country club membership invitations
- Random matches with you in multiplayer games
If a player is your friend, blocking them will remove them from your friends list."
(source: https://www.wgt.com/help.aspx#_blocking )
If this is the case, you know what this exactly means, unlike those who still like to assume it would mean something else, like less personal. Give it some thought. They're gone from yer friends list, you can't send them another friend request... So, there is that. And then move on. There are more players worth yer time than the few you've been playing with who have most likely blocked you.