priceline LLC pricelin.com 800 Connecticut Avenue Norwalk CT 06854 fraudulant pricing /end price different from quotes Norwalk Connecticut

I made an offer on Priceline.com and it was accepted at the price of  438.00 each ticket with taxes and fees  at $59.00 and processing fee of  $10.40

purchase date:jan.11th 2016.

after they accepted this offer the charges had changed to:$69.40 per ticket/each  and not just 59.00 total

the initial offer total was $2600.....the incorrect total they gave after I bought the tickets was:$3,044.40 a

difference of:$444.00

They refuse to acknowldge their non agreed/Fraudulant  price change

I want my refund ,I will be filing a claim with my credit card company