Based on the tweet "@AppleSupport worst customer service. 3days to get a diagnostic appt?! #disappointing #ittakes3minutestorunadiagnostic", 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.