Sumo in Groningen

Had a bad experience there today for lunch. I ordered a noodle soup individually, which is not part of the "all-you-can-eat". The waiter told us that the noodle soup is a big portion by showing with his hands before we ordered. But, it turned out to be that the dish is a small portion when served, definitely not value for money. Will not come back again. Two advices for the owner: 1. Do not deliver the product below customers' expectation; 2. Do not go for short profits by sacrificing customer satisfaction. You will learn these one day!