@Greta138. Yes this was happening to me before SH, despite my communication preferences showing as via messages (I have never phoned CS). CS would then message me to say they tried to call, I would then say I dont usually take international calls and we would move onto messages. I know some hosts like a call, but when it happens late at night or early in morning its a real pain. Besides, messages leaves a clear audit trail of communications.
These days as a SH it seems to be working better and I get all my responses via messages. Hope it works out for you as well.