Sign in the door says $19, the girl in the phone says $19, but when you show up they want to charge you more than that!!! $29 is not $19 folks!
False advertising is simply bad business and that is the type of business that thus chiropractor is apparently! Bad business!!!
Charge whatever you'd like to charge, but be up front about it! Crooked business practices won't ever be successful in the long run!
You lost this patient and likely many others due to shady business practices!