i can relate. to be honest in general its very overdiagnosed if youve ever been female. its like what people used to do with hysteria... there is a very real bias towards BPD (Borderline Personality Disorder; not "manic depression", like a different post said, which used to be whats today's Bipolar Disorder (BD)) and a lot, especially european mh professionals, like to ignore other diagnoses that can lead to mood swings, self-injurous and impulsive behaviour and dissociative symptoms. one being CPTSD which is sometimes not taken into account because a lot of Europe still uses the ICD10 which doesnt even have CPTSD in it (it also still calls DID "MPD"- atleast the German version does). and some mh professionals in hospitals or psych wards or anything, can be very frigid and act like the sometimes vague dx criteria is the only strict thing that matters. other options are also undiagnosed autism, cptsd, adhd, any mixture of other cluster b personality disorders, etc. so yes, there is a very prevalent bias to diagnose BPD in women who've been through trauma, though that doesnt invalidate the existence of it in people who do have it. like me. ive come to accept that it can be both biased, and what i do have.
also usually a BPD diagnosis takes a long time (atleast 6 months) because these can be complex to figure out, so its always ridiculous to me to hear that people are getting diagnosed after 25 minutes... that's really no way to go about it in my opinion. but a very hard label to shake off later, sadly. i know because something similar happened to me and even after i said i didnt think i had BPD, i was treated like i was just crazy and didnt know what i was talking about. which wasnt true, i knew my stuff. and after learning about CPTSD, that made a lot more sense but.. its like i said above, sometimes mh professionals can be hard to deal with... also they are mostly understaffed and have a lot of people to deal with, so i get why they say they cant take their time with everyone... still, 25 minutes is something where id doubt the diagnosis too tbh. thats not enough...
anyway, If you really dont think your diagnosis is correct, which is valid and should be heard, there is always the option to go to a specialist who knows more about personality disorders who can say for sure and take their time getting to know you (specialist dealing with trauma can be helpful too).
if you have any other resources id use those, trying to go back and refute them wont do anything and most likely only make them more sure of their bias.