Tax Invoices to Update

I have to create purchase receive using a cloud GST system from the many tax invoices for June 2016. It is also time to pay income tax for my boss as a sole proprietor to customs. Last month, I registered online for him to file his returns for the first time via the internet. I went to the customs department to get a PIN number that correlates to his IC number and from it, registered online and gave the password to my accountant. The last day to file is 15 of July this month for companies. So far a few calls to my accountant went unanswered, and I guess probably she is on a long holiday somewhere and does not want to be bothered. With GST, the tax collection is more broad based and not limited to the few thousands who pay tax regularly.