Why couldn't they just ask?

Today I got out of bed early. I didn't want to and didnt feel to good. I had to run errands. I went to this Chinese store to get something done. I usually don't speak Chinese cause I don't speak it well. When I got there all the lady's there was trying to firgure out if I was Chinese or not. One of them said excuse me in Chinese so I move. Then she told the other lady I do understand. They had another customer waiting. She butt in and said I'm probaly abc (American born Chinese). She said I understand but can't speak it. I was there for almost 30 mins hearing them talking about me. I'm thinking in my head you damn fob (fresh off the boat) why can't you just ask me. When it was time for me to pay. I spoke in there dialect telling them I am Chinese and I don't speak it well that's why I don't speak it. She was kind of shock. I understand 4 Chinese dialect I could speak my family dialect ok. I learn how to speak another dialect from friends and watching Chinese movies. I study another dialect when I was in school. I understand it but can't speak it. The last dialect I learn it from my friend she has her family dialect at home. Why can people just ask?

Tuve que salir de la casa. Me metí en mi coche y conduzco alrededor. Yo no podía dejar de temblar. Yo no podía creer lo que estaba sucediendo. Me encontré con un enorme bulto en mi brazo. probablemente sea mañana negro y azul. mi pierna y la rodilla está lastimando. Se siente al tirar de yo un músculo. No lo entiendo en el medio alguien va a salir lastimado.Me metí en el medio y me acaban de hacerse daño. Estoy molesto con todo el mundo.