Booking.com and hotel increase price 20x after confirmed reservation

I know booking.com is not a South African company, but I do need to share my terrible experience of late. I made a booking for a hotel and I accepted the offer. However, right afterwards, the hotel contacted me saying that the price is not the price booking.com displayed, but approximately 20 times more, that they made a mistake. So I expected them to own up to their mistake but they didn't. They refused to negotiate. Booking.com's customer service also just shrugged and said it's not their fault and that they are just the middleground between the customer and the hotel. So how can I ever trust any price I see on booking.com again? Even after agreeing on the price any hotel can come back and claim it was the wrong price and the customer must pay up? Just terrible.