fall on deaf ears(of a request, complaint, etc, to be ignored) verb [UK: fɔːl ɒn def ɪəz] [US: ˈfɑːl ɑːn ˈdef ˈɪrz]
go in one ear and out the other(to be heard but not attended to) verb [UK: ɡəʊ ɪn wʌn ɪə(r) ənd ˈaʊt ðə ˈʌð.ə(r)] [US: ˈɡoʊ ɪn wʌn ˈɪr ænd ˈaʊt ðə ˈʌð.r̩]