Any Ideas For "Real" Sounding Testimonials?

I have a bunch of written testimonials that I want to convert to audio, but some of them are from a while ago. I tried fivver gigs but they all come off as too polished and hypey...

Any suggestions on where to look for people that will record a 20 second testimonial?

I'm trying to fire back up an old system that I let die, so no one's really active right now or I'd just ask some of them to.

Thanks!