Booking made and accepted - On arrival Restaurant closed?

We had made a booking to celebrate a special birthday at Nostalgie Restaurant in Oudtshoorn on 16 June 2021. The booking was accepted and confirmed even though I reiterated that the date is a public holiday. I was assured that the booking was accepted and that there would be no problems at all. After travelling over 50kms to get there, we discovered the restaurant closed. I contacted the number on the board and was asked to travel to De Rust for tapas and hamburgers. I had made it very clear that this was a special birthday and frankly tapas and hamburgers was not what I wanted. This was a wasted trip of over 100 kms. Thoroughly unimpressed with the response and will not recommend this restaurant or visit it again.