Rude lead dimmed my confidence today

Rude lead dimmed my confidence today I just started my job as a crisis counselor, and my trainer is incredibly overbearing. He wants me to share all of my screens and set up my computer exactly like his. While I was on a call, he was listening in, and a man called about removing undocumented immigrants—even though he had the wrong number. I remained polite and professional, but my lead crisis counselor was aggressively texting me in bold letters, telling me to hang up because we couldn’t help or provide resources. I didn’t want to be rude, so I ended the call kindly. Afterward, the lead counselor told me I need training on wrapping up calls faster and criticized the way I answer the phone, saying I sound like a “happy, perky cheerleader” and that I shouldn’t be like that. Honestly, I can’t stand people who try to control others. I stutter so this is a huge step for me , and my way of handling it is by being cheerful and uplifting to clients it helps me connect with them. I have to work with this guy one last time tomorrow. Any advice on how to handle this situation?