pull one's hair out(to be very angry, upset, or anxious about something: The nation is pulling its hair out over what to do with these child criminals.КГА)
red flag(Jobseekers sometimes do not mention jobs from which they were fired on their résumés; accordingly, unexplained gaps in employment, and refusal to contact previous employers are often regarded as "red flags" • For example, a translator or interpreter resume that lists 20 or more areas of specialization and 50 Fortune 500 clients raises red flags.4uzhoj)