Afterpay and Zip Pay have been the subject of more than 250 complaints to the Australian Financial Complaints Authority in the eight months to the end of June.
The complaints relate to unauthorised transactions, incorrect fees and negative impacts on credit ratings.
Federal financial intelligence agency AUSTRAC said on June it had ordered Afterpay to hire an external auditor to probe Afterpay's compliance with the 2006 law, and threatened unspecified action if the firm wasn't taking it seriously.
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