I've had Jeremy Timmons do some small commercial work for me, he's been honest and on time every time. I wouldn't hesitate to contact him, though he likely won't be the cheapest option.
https://www.homeadvisor.com/rated.TimmonsPlumbingCoLLC.63525044.htmlI had another guy out to snake a line for me at my home in NW Austin when Jeremy was unavailable last year who did what he said he'd do, I'll have to find his card when I get home if you're still looking.