Tomárselo a mal

[ROBINDESBOIS]

No te lo tomes a mal
In English?
When sb does sth to us sometimes intentionally sometimes unintentinally, and we get on our neverves ! to make things softer we say no te lo tomes a mal, don´t pay any attention to it.

[JPablo]

tomarse algo a mal = to take something to heart; to take something badly
(tomarse algo muy a pecho)

estar a mal con alguien = to be on bad terms with somebody

Also
tomarse a mal un consejo = to take a piece of advice badly
¡no te lo tomes tan a mal! = don't take it so badly!

estoy a mal con mi vecino = I'm on bad terms with my neighbour