Be/talk at cross purposes informal verb phrase
To be in conflict with or misunderstand someone or something
I think they are at cross purposes. You should help them reconcile with each other.
Hold on, I think you may be talking at cross purposes.
I realized we had been talking at cross purposes.
The leaders are at cross purposes about the design of the project.
A relationship that is full of disagreements or quarrels
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.
Although someone is given reliable information, they continue to ignore or misunderstand it.
The verb "be" or "take" should be conjugated according to its tense.