How to report hackers?

[grantatrade2011]

Hello
I am receiving message for android app submission and asking me to add their email into my developer account so he can upload app. I know he is trying to hack my account how can I report user ?
2 Buyer contact me that why want to work work me on long term business, ask me to contact via Email or WhatsApp. How can I report them ? bcz this is also against rules.
Sorry for my poor English 😦
Thanks and regards
Zan

[graphtersawyer]

Report the messages themselves and contact Customer Support by opening a ticket.