Hello,
my name is Kenji and I'm an experienced audio engineer and editor.
The procedure is identifying the problem, see how much it can be solved and find a way to get it sounding a the best.
I've have the best tools for audio restoration and being a certifed Pro Tools operator, there are very good possibilities I can help you out with it.
I'm pretty fast so you would have it ready in a really short time, possibly by 1 hour.
Let me know you audio features requirements if needed in a different format.
I look forward to working with you.
Have a nice day.
Best,
Kenji