If you did not receive any filing notification and your annual income falls below the income threshold (i.e. $22,000) for income tax declaration, you are not required to file an income tax return and no tax bill will be issued. 

If you need the tax bill to certify your income, you may present other income documents such as payslips, Form IR8A/IR8E from your employer or certified statement of account if you are self-employed.