Charged without my authorization

Basically after the reservation is book there s no way I can talk to the representative that work on my reservation to change or move the reservation and automatically charge on my card without my concern.

So here is what i wrote on yelp
I believe there penalty on not show up is too unreasonable.

So I had a business trip last minute (24 hours before the reservation) and there cancellation policy require 48 hours in advance. I booked for a party of 6 for my guests. Yes I know its a lost to a restaurant but charging $570 for not show up is too much. And its really hard to contact the restaurant. I booked through Reserve and I cant contact them. And I also cant contact the restaurant.

ReyTran about Reserve for Diners, v2.6.5