Uncivilized behaviour

I placed my order with Zimbini this morning and she could not get it right, I informed her that my husband and I were planning on having our meals the restaurant. After 15 mins of waiting, watching how the staff in the back are dancing and talking I asked the lady who took my order why its taking so long seeing that we were the only ones waiting, he reply\ I don't know what they doing they dancing and singing."By this time I was annoyed. Someone"