tl;dr but is this Old Phuket Town? I remember when I had to have a medical extension due to appendicitis and the person there was super grumpy, to say the least. Patong I've never had a problem with.
hassling people on this visa seems kind of counterintuitive, doesn’t it? The ED visa is abused to heck, but DTV is specifically for people who are digital nomads and want to make it official. I suppose the Muay Thai element could open it to abuse, but still….