Wisconsin Administrative Code
Department of Financial Institutions
DFI-Bkg 1-78 - Department of Financial Institutions-Banking
Chapter DFI-Bkg 14 - Customer Bank Communications Terminal Joint Rules
Section DFI-Bkg 14.09 - Chargebacks

When any sale of goods or services is paid directly through a terminal and involves an aggregate transfer of funds of $50 or more from an account of a customer to the account of another person, but does not involve a check or draft, the bank shall reverse the transaction and recredit the customer's account upon receipt of oral or written notice by the customer within 3 business days after the date of the sale. "Business day" means that part of any day on which a bank is open to the public for carrying on substantially all of its business functions.