Male sims having a female voice

I noticed as I play the sims when I pick a sim from the cupid's corner that is made by someone or not in a household the male sim voice is male but when he leaves the lot or go some where with the sim u talk to him with your sim you can't hear his voice and when you do he has a female voice when you go to modify in cas to fix his voice to got back to a man's voice you can't fix it it says and he sounds like a male in crate a sim but when you exit creat a sim he still sounds like a female voice and you can't fix it