Task: Categorize the tweet's emotional expression, classifying it as either 'neutral or no emotion' or as one or more of the specified emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that reflect the tweeter's state of mind.
Tweet: @lebara - worst possible decision I could have made when arriving in the UK. Shocking service. Poor coverage.
This tweet contains emotions: 
anger, disgust, sadness