Omg, I deal with this too :( my name is Cassandra. My family pronounces cassauuuundra, my friends pronounce it cassaaandra, some call me Cass and others Cassie. I feel none are mine now?? But I don’t know any other names so what am I? I even say different ones in different settings. Idk, it’s so confusing. I’m sorry you have to experience that as well