Clean up audio

I have an audio recording I need background noise removing and the voice clear as possible this audio is off a camera of my partner unfortunately there is a lot of background noise and he is very quiet as he doesn't want me to hear but he forgot about the camera I am guessing he us cheating i really need to know ao desperate to kniw whats said before I buy a property we are in the process of buying so this is urgent there is pauses between 3 calls which can be removed just need all the voice sorted pls