@Jay1595 Flagging the account doesn't generate a response.
You can't actually send a message straight to the Trust and Safety Dept. What I do when I want to have an issue addressed by a specific dept is that I title my message "Trust and Safety Issue". Then my first line is "Please pass this on ASAP to a Trust and Safety rep." (or Tech Support, whatever the case may be)
Then very briefly describe the issue- you can go into detail with the appropriate rep when they message you back. You don't want to bog the usually clueless front line CS rep trying to help you- you want them to pass it in.
So in your case, just say you have concern about a so-called guest who sent an inquiry, and then somehow had access to your personal email address.