Totally and Utterly Disgusted

I am totally and utterly disgusted by the service I just received at your V&A Waterfront branch.My husband, my 3 year old daughter and myself decided to go for lunch today and our request was that we would wait until a table opened up close to the playpen. Patiently sitting and waiting for 15 minutes and my daughter getting restless now we see the manager seating another couple at the next available table close to the playpen which had just walked in. I complained and mentioned that I had been waiting now 20 minutes and yet they seated other people there that just arrived. No apology from the manager or staff which is totally disgusting. This branch knows absolutely nothing Customer Service!. I do not want to use the racial card because that is not who I am but it makes me wonder if that was the reason? The couple they placed at the table were white and us being coloured I feel as though this was the reason for being overlooked. How do I explain to my daughter why they got preference over us?She was kicking and screaming and we had to force her to leave which was a tearful site. All I want is a written apology from the manager