I’m sorry you had to experience that, here’s some tips exercise regularly, meditating also has helped my speech immensely, also recently I’ve deleted all my social media so now I just give 0 fucks like I just try my best and yeah I might block or say “erm” or “er” a lot and repeat like certain words but i still push through and don’t make it a big thing and most of the time other ppl wont even notice you know what I mean but occasionally you get some ppl that maybe the just hate their job or are really impatient or have got their own problems etc and they also don’t have a lot of self awareness when it comes to stuttering like a lot of ppl joe biden was a big one I don’t live in the usa I live in the uk but its still a big thing coz now a lot off people will know more about stuttering yeah I know what you mean, I struggle with phone calls aswell still. I hope what I said helps you and anyone else who reads this. Hope you have a good day! :)