Do you have a nickname or a preferred name? I do and Im a cis man. My nickname is a less common nickname of my full name. If you call me by the more common nickname I usually do not respond because in 50 years that was always a different person's name and not mine.

If you know me for long enough and you keep calling me the wrong name I am going to think you are pretty rude because you should know my name if you know me.

It's the same way with pronouns. No rational person is going to jump down your throat for using the wrong pronoun the first time as you aren't aware of their preference, but when you have been told a few times it is rude.