On the wrong end of (something) phrase informal
If you say that you are on the wrong end of (something), you mean that you have a problematic association with something; thereby leading to negative consequences.
Marry was on the wrong end of the school rules since she cheated in the examination.
We found ourselves on the wrong end of the insurance package. The total amount of money we saved for the rainy day was tricked.
Our team found us on the wrong end of a draw, which pushed us to a hard position in the last round.
Although someone is given reliable information, they continue to ignore or misunderstand it.
Have a misunderstanding based on verbal or nonverbal communication between one another
To misunderstand one and therefore feel offended.
To be in conflict with or misunderstand someone or something