it is a private conversation

last week,I went to the thertre.I had a good seat
the play is very interesting,but i do not enjoy it
a yang man and a yang women sat behind me,they talked a loudly
I can not hear the actors,i turned round and looked at them angrily
But they did not pay and attention.
In the end ,i can not bear it,I turned round and said:i can not hear
the yang man reply with rudely:it is none of your business
it is a private conversation