anti customer face attitude

On the 09th January 2016, a group of 4 of us went to sit down at the Ocean Basket in Gordons bay on the marina. The setting was beautiful. The restaurant was clean neat and tidy and the waiters were with us in seconds, were friendly and took our order. We asked to swap one of items on the specials menu and the waiter returned to notify us it was declined. The food was delivered and was as a high quality and delicious as is expected of Ocean Basket. So when I was leaving I noticed the managers intentionally ignore me. My wife got the same treatment and so did my sister. It appears that they do not greet or thank there customers for the support. I do not want to support a business that does not like me and just my spend with them. Restaurants are very successful o there customer service. Maybe there are different standards of treatment to different people. Please notify us at the door of your unwillingness to be pleasant so we can leave and choose a place that will make our experience wonderful. We do not want the whole European Greek experience from Ocean Basket, just the food. Also Ocean Basket I am sure wants business and not bad publicity.