Do Thai Money Changer accept malaysian Ringgit?

I often travel there and sometimes change RM . You can at the banks but the rate isn't good . I usually buy US $$ when the rate is good and change there or the simplest way is to chanceto Thai Baht in Malaysia .Of course the border ( to Malaysia ) towns do easily change and give very good rates . So if a friend is going to Hatyai you know what to do :)