In my experience they tend to set up a /s message bot near the market boards in the 3 capitals and every 10-30 minutes one will send a /tell at you. It's come to the point where I rarely register it as someone trying to actually talk to me, I almost always ignore the sound thinking it's another spam message.

All I need to do to get away form it for the most part is go to Idyleshire and it's stops. If only it had a market board I could be free....