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: tesco. why OH why cant my Visa electron be accepted on line , I am 55 , NOT 15 ??
This tweet contains emotions: 
anger, disgust, pessimism, sadness