I have received a receipt from friends. And now wh...

I have received a receipt from friends. And now when booking I notice that, because it is the weekend that I want to book, I still have to pay 30 EUR and I also could not opt for a cheaper arrangement to get around that. That should have been stated on the receipt itself and not on the fine print. In addition, I was not given a friendly answer. For a company that wants to make people feel good, I think that's a bad thing!