Audio Distortion Repair

I need help fixing severe distortion in a 2-hour WAV audio file. The audio is severely distorted, primarily with crackling sounds.

Requirements:
- Experience with audio editing software (e.g., Audacity, Adobe Audition)
- Ability to remove or reduce severe crackling
- Knowledge of handling long audio files
- Attention to detail to ensure clarity

Please provide samples of previous work and estimated turnaround time.