Task: Classify the mental state of the tweeter based on the tweet, determining if it is 'neutral or no emotion' or characterized by any of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: @littlepieces Customer services got involved and eventually completely wash their hands of it.  #dreamornightmare
This tweet contains emotions: 
anger, disgust, fear