Booking.com ****!

I booked a property on booking.com and made a payment instantly on site, my booking was confirmed and fully paid it for, called in to verify the booking with the property and everything was set. However booking.com wanted to charge me again on a different day till they cancelled my booking due to non payment which did not make sense as everything was paid for, when i called them for clarity they requested proof of payment which for some odd reason it didn’t show on my bank statements. They said they can’t help me as there was no proof that i paid. I was ****med by this site 🤬🤬🤬