I have been reporting my partners income to centrelink BUT?

instead of putting it in as weekly they stuffed up and put it as a fortnightly amount anyhow now "apparently" i will have to pay back a debt to centrelink!!! what i would like to know is i have overestimated out taxable income for the financial year so would that cover that or not his actuall taxable income is 24,000 but i told centrelink it would be 32,000 so because of that would that counter balance the debt...i hope you can understand what i mean...