If someone is harassing you or you are uncomfortable with someone, the first thing to do is to delete that person in your Favourites section. They will no longer be able to interact with you after this is done. To do this, INSERT INFO.
The below resources may also be of benefit:
Help, Advice and Resources in Australia
Australian Cybercrime Online Reporting Network
1800 737 732
Police – 000
Family Planning Alliance Australia – Directory of Family Planning Clinics
1300 405 568