Priceline Outright Lies
I booked a 5 night trip through Priceline at the Atlantis resort (Bahamas). Priceline advertised complimentary breakfast -- a lie, outright. Atlantis did not offer that (which by the way, is otherwise a wonderful stay).
Secondly, about a week before our trip, our flight was bumped a day sooner, giving us an extra night without a room because Priceline refused to accommodate in any way. We would've slept on the streets or inside the airport if we didn't manage to find a smaller room at another hotel at the last minute. Priceline wouldn't even help find another place, let alone get us an extra night at Atlantis.
Thirdly, hotel utility fees are not included in their advertised price and they play ignorant in letting you know how much those are, in advance. Overall shady, and misleading. The breakfast part I mentioned is a small ordeal but still an outright lie and false advertising by Priceline.