False advertising and disappointed

They had advertised All you can eat sushi for R149.00 per person. It was my one year anniversary with my partner and we thought we'd treat ourselves, as we never do, and go for sushi for a change. Only to get there and the price was R189.00 per person. After speaking to the waitress, she explained that price was from 4 years ago and they never updated the website. She wasn't accommodating, even after showing her the advert and we walked out very disappointed and obviously anniversary spoilt.