Booking.com review: Misleading pricing

My daughter and myself were looking for a property to stay in August she found one For 4 nights priced at £550.00 right on our budget, she clicked on the Property and looked at all the details, she then sent the link to me I looked and checked it was suitable, which it was. I messaged her to say go ahead and book it and within FOUR minutes the price had risen to £800.00 this is extortionate and priced out of our budget. We left it for a while then went back in still at £800.00.

I went back on to try and contact the host only to now see. WE'RE SORRY BUT THIS PROPERTY ETC, (SEE Photos attached) not taking bookings.

Again my daughter went on again and it was available to book, not knowing what was happening I requested to book and it was accepted, this is very stressful and unacceptable and false advertising. Please inform and adjust the price so we can continue with this booking.

I have found it even more stress full trying to contact you be email as you just want a booking reference to help us and because I haven't got that information I am being penalised. Please LOOK INTO THIS AS A MATTER OIF URGENCY.

It will not let me add the evidence that the property was back available?

kind regards

I Hession