Freelancer.com and Jenny Jen Morgen

A lady by the name Jenny Jen Morgen registered my email with Freelancer.com, but not willing to give the password. She scammed me from R450 promising payment from homebasework.net after completing 30 days work. I would like to know what is her involvement with Freelancer.com. Her numbers 071 514 1257 and 079 073 8358