5/10/2017 HAV announced to the ASX a "1 for 7 renounceable pro...

5/10/2017 HAV announced to the ASX a "1 for 7 renounceable pro rata Rights Issue at an issue price of $0.20 per New Share"

The keyword being "renounceable" meaning shareholders were able to sell their entitlement on market. That's what you purchased when you bought HAVR, someone else's entitlement.

According to ASX release dated 16/10/2017, Rights trading ended 24 October 2017.

To convert your rights into shares, you needed to have paid 20c for each right by 31 October 2017. Shareholders who did convert their rights to shares received a bonus issue of 1 option for every 2 new shares.

If you did not take up all (or any) of your rights, they would have gone into the shortfall pool which HAV management has reserved the right to place within 3 months.

So, if you have not taken up your rights, and wish to do so now, it may be worth contacting HAV management ASAP and explaining the situation that you're new to the market and didn't know what you had purchased and would like to be considered for the shortfall. Absolutely no guarantees that they'll agree to allow you to do so though.

Otherwise, your Rights will eventually disappear from your Comsec account. Whilst I've never bought Rights on market and not converted, I would assume they're like other investments where your loss is tax-deductible. You'll have to confirm that though.