Was is this T (the one who gets angry) who gave you the diagnosis of DID, PTSD, anxiety, and depression? If so, he is not showing an accurate understanding of how severe those are by behaving so insensitively.

I once told a pdoc that I've had been yelled at all my life; tough love and "snap out of it" statements were only going to make me worse -- what I needed was understanding and patience to get better.