RedTag question about their pricing discrepancy

Hello my fellow travelers of the world, I'm coming to you with a question regarding redtag pricing policies, I booked a vacation package to Punta Cana through their site and noticed that the amount charged to my credit card was higher than the price shown during checkout.

At the time of booking, the displayed total was lower, but the final charge on my credit card ended up being $120 more. Called them immediately but received no help, all they said is that the prices might change and i should just accept it! While I understand that the prices might change during the day or even from hour to hour as the tour operators update their package pricing might be normal; but this happening during the 5min while you enter the reservation and credit card details and without any notice or warning on their part, I find that weird, unpleasant and borderline anti-consumer. ​ Has anyone experienced something similar with RedTag or another travel agency? Do I have any recourse with them?