Wagamama complaint: Cold food

Hi, we ordered food waited patiently , but when the food came it was totally cold unedible. We complained to a guy who was the waiter , named Eden??? And was told basically eat it or you will have to wait even longer. Very poor customer service. I am not one to complain but I thought the attitude was very poor. I fly regularly from Manchester and come to wagamamas all the time. While there I noticed that the chiefs were shouting customer service and the food was left, 15 to 20 minutes before being served to the customers. I appreciate its a busy but please customer service is everything this is part of the reason why people come back, time and time again. Eden worked well.under pressure but I feel was unhappy that I complained. Talking to the other waitress who took the drinks Alice who was using Bradley’s name to use the orders and bills. I feel that we were mocked for complaining.
Thankyou all very much for reading this and I hope you take the time to address the problems raised today .