In samp, it does not matter what server shows us. It’s just you, who can create a good rp. In your case, if someone calling you by name then he just not doing a good rp that’s all. you should just ask the other player in ooc that he is doing wrong. if he did not understand then he is not good at rp.
This is already bounded by roleplay rules. where roleplay rules state that You can not use ooc informations in roleplay.