OVERBOOKING WITH NO CAPACITY

I MADE AN APPOINTMENT FOR MY CAR TO BE SERVICES WHEN THE SERVICE ADVISORY TOLD ME THAT FORD WAS RUNNING A CAMPAIGN FOR A MY TOW BAR TO BE REPLACED. AFTER TAKING A MONTH TO ORDER THE PARTS FOR ME , I FOLLOWED UP TO FIND THAT THE PARTS HAD ARRIVED AND WAS ASKED IF I COULD BRING MY CAR IN ON 12/2/20 WHICH I AGREED. DUE TO AN EMERGENCY AT HOME I CALLED TO POSTPONE MY APPOINTMENT FOR 13/2/20. I NOW RECEIVE A CALL FROM THE ADVISORY TELLING ME THAT THEY CANNOT HAVE MY CAR READY AS THEY TOOK IN TOO MANY CARS TODAY AND CANNOT GET ME CAR TO ME. i WAS NOT GIVEN ANY SOLUTION AFTER ADVISING THE PERSON THAT I DO NOT HAVE ALTERNATE TRANSPORT. SO KAREN ASKED ME WHAT SHE SHOULD DO . MY SUGGESTION WAS TO SPEAK TO A SENIOR TO COME TO A SOLUTION AS MY BUSINESS WITH THEM IS OF NO PRIORITY IN COMPARISON TO OTHER CUSTOMERS THAT HAS COME IN LATER. HOW CAN A CAR BE BOOKED IN WHEN THERE IS NO CAPACITY FOR A SERVICE DELIVERY.