Usually a company needs staff to work a notice period. Pretty sure they worked Mel and Syd HM when they closed. Are you expecting Forstaff to pay you when you are not working?
What's bonus got to do with Sick leave? I would usually say nothing but I think the past bonuses that have been paid to Forstaff employees have an element of burnt leave used within the calculations.
If the whole thing is making you feel sick. Go see a doctor.