ISTANBUL AIRPORT TO ANTALYA TAXI - AN OVERVIEW

Oooh pricey… I'm just cheated from the taxi driver… lol… He charged me three hundred TL from Sultan Ahmet to Umraniye… He utilized crossing tunnel from european to asian side… his taxi is organization taxi (blue a person)… bla bla bla… The hotel staff mentioned that Ordinarily about one hundred TL. Who is correct?I need a return taxi