Surveillance Voice Clarity Enhancement

I have a 1 hour and 34 minute surveillance-video with voice recordings that are difficult to understand because of background noise and low volume. I need a forensic audio specialist to clean these files... (Budget: $30 - $250 USD, Jobs: Audio Editing, Audio Engineering, Audio Mastering, Audio Processing, Audio Production, Audio Services, Digital Forensics, English Grammar, Sound Design, Transcription)