Task: Analyze the tweet's emotional expression, classifying it as 'neutral or no emotion' or as one or more of the identified emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that best represent the tweeter's emotional state.
Tweet: @virginmedia have the worst customer service I have ever encountered - I am disgusted. Please contact me @richardbranson #appalled
This tweet contains emotions: 