First of all, fuck that guy. Second, you should report him to upper management or HR. Maybe look into your gym’s contact information and consider emailing a detailed report of what happened and his behavior. You can tell a lot by how someone responds as you’re going through a block, and this guy only deserves to get lit up. I usually stop myself from speaking, tell the person I have a stutter and have a hard time saying my name. Taking the pressure out of the situation always helps me get my name out. Im sorry this happened to you