Wrong advertising

We went to John Dory’s at Zevenwatch Mall today. On the poster outside it showed that they serve breakfast until 11:30. When we got there we were told only until 11:00 and when we told them about what we saw on the poster they said they will check and come back to us. They checked and instead of serving us breakfast based on their advertising their manager told us they can’t because they had already prepared for lunch so breakfast is no longer available. Why are they false advertising?? Pathetic