Pathetic Service From Bookings.com

How The F***K do you call the Bookings.com number, I have been given a number to call them that is Invalid, The Email I sent Requesting A Cancellation Refund, it's the 3rd time they send the same email requesting Confirmation Number Pin Number Details.... They should have had all the details when the receipt is sent... The Other Number Asks For Booking Number but has Confirmation number & Pin Number... When the number is entered on the phone it's on repeat please enter booking number, Please F**"king sort yours ****ting System