Received Bad treatment from waiter

A white waiter kept me waiting for about 20 minutes while he escorted other white people to tables. I then told him that we would rather prefer to sit at a 2 seated table with another chair added to it. He then got me a hard black cold chair which was outside in the rain and gave it to me. I then simply saw other chairs available at other tables and asked if I could take a chair which no one was using at a table where 3 people was sitting at which was comfy chair the same as everyone else at the restaurant was sitting on.<br> <br> Bad service which the waiter got 2 of our order wrong. We order 1 red cappuccino and 1 normal cappuccino and instead we got 2 normal coffees. Service was absolutely appalling and I've never received bad treatment at a restaurant before. Made me feel totally welcomed.