harassed by a waitress who claimed to be a manager and i am so disappoint with the service there

went there for my daughters birthday on the 8th of march and spent alot of money there because i had 10 kids with me and 8 adults and we bought food and drinks and was harassed by a waitress who claimed to be a manager when we had asked her about the place we had booked for the day to have my daughters party and she was so rude to us i am so disappointed with this service and i havent been there since