Certica can't write an invoice. They're trying to ...

Certica can't write an invoice. They're trying to subtract my superannuation from my taxable income which is illegal. Then no mention of superannuation on the invoice. Withholding superannuation payments without asking for super fund details. They're trying to tell me that withholding 9.5% of my taxable income is the correct way to withhold my super . Bunch of clowns if you ask me... Who need to read up on Australian tax law.