Task: Categorize the tweet's emotional tone as either 'neutral or no emotion' or identify the presence of one or more of the given emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: I click on download on my PC. Message says 'Thank you for downloading #iTunes \nSo, where's the download?! #frustrated
This tweet contains emotions: 
anger, disgust