My cousin once got mad at me that because i had headphones on i didnt hear her in public.

Came to me complained to me and i talked back, while still wearing headphones. Only when i pointed it out that i am wearing headphones right now she got upset at it again. She also couldnt bring any arguments why its a problem and how its supposed to be disrespectful wearing headphones in public. Imo its more disrespectful being entitled to wanting others to always be prepared to give her attention.