Airport Transportation

Arrived yesterday, by myself. tried to get a collectivo to Centro at 198 pesos, ( think it said 198....the Board says 190) but they pulled the same trick as last time, saying only one piece of luggage was allowed. I had three, so they said I had to take a taxi. They charged 490 pesos, ( the Board says ....I think.....590 pesos.)
It'd be nice if the staff at the airport transportation booth would stop this blatant nonsense.