YOU SAID:

I think you have the wrong guy

INTO JAPANESE

私はあなたが間違った男を持っていると思う

BACK INTO ENGLISH

I think you have the wrong man

INTO JAPANESE

私はあなたが間違った人を持っていると思う

BACK INTO ENGLISH

I think you have the wrong person

INTO JAPANESE

人違いでは

BACK INTO ENGLISH

I think you must have the wrong person.

INTO JAPANESE

人違いでは

BACK INTO ENGLISH

I think you must have the wrong person.