Based on the tweet "Library vendors sometimes really irritate me, esp. when a new owner has little commitment to what was once a great product + poor manners.", categorize the level of sadness felt by the author. Select from the following: 0: no sadness can be inferred, 1: low amount of sadness can be inferred, 2: moderate amount of sadness can be inferred, 3: high amount of sadness can be inferred.