まちがいでんわ
wrong number
Noun
間違まちがい電話でんわだった。
It was a wrong number.
最近さいきん、急きゅうに間違まちがい電話でんわが増ふえたんだけど、なんでだと思おもう？
Recently, I've been getting more calls from people who had the wrong number. Why do you think that is?