You certainly have been through a very difficult time. I think you should feel really proud that, despite the difficulties you were experiencing, you did actually manage to complete a 4 yr degree course.
I have no idea what Atrophy, fluent aphasia, or somatisation disorder are. Whether you're symptoms are down to one of these illnesses or another or maybe even your MH, it doesn't matter, there is absolutely no need for those Doctors and Nurses to be so rude and, at times, even nasty. To be escorted off the premises by a guard while in the throws of a panic attack, just doesn't seem appropriate. However, from experience, attempting to raise a complaint through the NHS can be cumbersome. It sounds like you're going through enough without taking on anymore aggravation, but only you will know what's best.
Sometimes our nearest and dearest can be a bit on the curt side, but underneath the day to day stresses, your Dad will be very concerned and probably also feeling upset to know that you aren't having a very happy life. I'm sure everyone who visits this Forum will relate to your day to day and hourly fight for survival.