From Longman Dictionary of Contemporary Englishbe upset with somebodybe upset with somebodyif you are upset with someone, you are angry and annoyed with them You’re not still upset with me, are you? → upset
Examples from the Corpus
be upset with somebody• Paul Ritchie was upset with a County Council decision to withdraw pay for trainees at the centre.• Some of the powerful judges and lawyers in California who supported Bird were upset with me.• United manager, Brian Horton was upset with the decision.• He is upset with the prime minister for not trying harder to create a non-aligned peace formula to end the Gulf war.• It is only a game Raymond so do not think we will be upset with you. 