Señor Barber Shop - Scammed my 69 y/0 dad

This place scammed my dad and took advantage of him. I requested a specific package for my 69 years old father who does not understand English and after noticing that the hair cut took long even tho he doesn't have that much of hair. They did to him a hair treatment? what a person with a brain will do a hair treatment to almost a bald guy ? after asking them why the bill was very high like 3x the original package they said that my dad agreed for such. What a frustrating experience. i was planning to give a generous tip however i guess some people drools when they see a foreign.