get (one's) signals crossed

To have a misunderstanding or miscommunication with someone else. I'm sorry I'm late, I thought we were getting here at 8—we must have gotten our signals crossed. My mom and I got our signals crossed, and now there's no one here to babysit the kids.

Common Names:

Name	Pronounced	Usage
GonÇAl	-	Catalan
Cecil	SEE-səl, SES-əl	English
Ilia	eel-YAH (Russian)	Georgian, Russian, Bulgarian, Old Church Slavic
Takeshi	tah-ke-shee	Japanese
Dene	DEEN	English (Rare)
Valda	-	Latvian