Fixing the Snap Account Access Problem

I am unable to access my Snapchat account. My username, email address, and phone number are not matching. I’ve tried everything, but nothing works. I want to recover my account, but I can't log in. The password is not being accepted. I don’t know if the account is still active or who might be using it. It says my email is incorrect, and it won’t accept my phone number either. Please help me recover my account. It seems that someone else is using it, and the username has been changed. I believe the person who took over my account is male.