How do i prevent a blocked member from sending me abusive messages?

[digupatin]

 If an Ebay member is spamming/harassing/abusing you use the Help & Contact tab to report them to eBay.

http://ocsnext.ebay.com.au/ocs/sr?&query=614

You can also report them to the police and if really concerned ACORN.

https://report.acorn.gov.au/