As per the email you would have received with the chargebacks:

"Please review attached and provide a supporting document that disproves cardholder's claims in form of e-receipt/invoice saved in PDF or approve reversal if cardholder's claim is valid.

 Please reply within 24 hours for us to provide relevant dispute documentation to our acquiring partner. 

 Note: The system will automatically process a debit off your account and reverse the same to the cardholder if the dispute remains unresolved."

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