turn a deaf ear
US /tɜrn ə dɛf ɪr/
UK /tɜrn ə dɛf ɪr/

1.
充耳不聞, 置之不理
to ignore someone or something, especially a request or warning
:
•
He always turns a deaf ear to his parents' advice.
他總是對父母的建議充耳不聞。
•
The government turned a deaf ear to the public's protests.
政府對公眾的抗議充耳不聞。