Priceline complaint: Poor Customer Service !!!!

I went on line to book a hotel for our next night’s stay. As I was about to book, a small notice in the bottom right hand corner said to phone and get the lowest possible price. I phoned and was told the amount including tax. I gave my credit card and received an email very shortly with the price ( taxes and fees were added to the price I was quoted !! I immediately phoned customer service to complain, gave the reservation number provided in the email by priceline and was told that this wasn’t a priceline reservation but a booking.com. I argued to no avail !! I have communicated a number of times and the cake topper was when Priceline wanted a copy of my receipt ! I paid over the phone, it was non refundable and the hotel said that my receipt would be given by the service provider !! The amount of money isn’t large but the deliberate evasion of the company is irritating !! Here is a copy of the latest correspondence _