The plumber( Javier) call itself before our appoi...

The plumber( Javier) call itself before our appointment and ask if we r ready to spent more money.
Day earlier we set appointment and because it was Sunday we are was aware we will spend $50 more. So price went up from 99 to 149. We were ok with that. But then Javier came and said it will be more than 519$ (without even observing the problem). Keep insisting if we would call on a workday it will cost us only $99 .
Looks like company dosent know they own rules. No explanation. Magic. Awful experience.