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: After spending £450 @Debenhams I was offered a £5 voucher. I asked if I could spend it at weekend? Was told 'no valid today only' #unhappy
This tweet contains emotions: 
anger, disgust, sadness