Can't skip male voices in female songs

Whenever I create a song that is intended for the female singers the second verse and segments of the chorus are sung in a male voice. I hate it, especially as in my language in the past tense it is clear that should be a female voice as it is a female past tense. Of course that in the style of music I clearly state I want to use female voices. It's driving me crazy. It's only with female songs.