The first thing you should do when you suspect your 𝓕𝓪𝓬𝓮𝓫𝓸𝓸𝓴 account has been hacked is to change your password and contact 𝓕𝓪𝓬𝓮𝓫𝓸𝓸𝓴 help center １（８４４）ー６０７ー８７８８. This step is crucial to regain control of your account, reset your password immediately１（８４４）ー６０７ー８７８８ if the hacker hasn’t already locked you out.
https://support.google.com/edu/classroom/thread/335087839?hl=en&sjid=16686435110084785441-NC
