Hi there,
I would love to help you sort the audio out, ill create the sample of the audio and send it to you, and if you are happy with it, I'd love to take this project on and work with you!
I work in the Adobe Creative Suite and have edited music, created interview videos, and produced promo videos for businesses, so I'm familiar with the struggle of not being able to hear voices in a video.
I look forward to working with you,
Kind Regards,
Kasim