I changed my bank account so I went and updated my payment/ credit cared details with booking.com. The old card details were deleted. I had accommodation booked for this weekend. They tried to charge my old card and when this didn't work they cancelled my booking and I only found out on the day of my booking. So even though they had an updated payment method in their system, they chose to use the old one and I had to wear the consequences. I rang them up to complain and was told " well we sent you an email telling you it would be cancelled". That is not the point... they tried to charge the wrong credit card. It was not my fault. I had updated my details so I was not expecting to receive an email from them other than one to let me. know about my upcoming booking. They had my phone number and could have texted me to warn me seeing as it was their error, the onus should have beeen on them to do all they could to notify me. This problem caused me a massive hassle and extra cost today. The booking.com guy on the phone avoided dealing with it by saying he would ask his manager what to do and he assured me he would be back in a couple of minutes. He just left me hanging on the phone for so long that I gave up. I will never use them again. There is zero accountability