"I was unaware that officials listened in to golfers conversations with their caddies etc ..."

"does that mean players will be penalised for using their own language to talk to caddies?"

No in both cases, a golfer can talk to caddy about anything he or she choses, distance to target, wind effect, club selection, the line of a putt - In the course of a normal game the golfer would not be allowed to ask anyone other than his caddy about such things - to do so would be to break the rules of the game.