get one's wires crossed

/G EH1 T W AH0 N EH0 S W AY0 ER0 Z K R AO0 S T/
verb
  1. 1

    To get confused or mixed up about another person's intentions; to misunderstand one another.

    โ€œWe got our wires crossed so I went to the bus station and she to the railway station.โ€

Source: https://en.wiktionary.org/wiki/get%20one's%20wires%20crossed