13 A.M., Deputy James Faulkner of the Kandiyohi County Sheriff’s Office was dispatched on the report of employee theft. Deputy Faulkner spoke with Amber Dahl, the Senior Director of Accounting and Finance for QC Supply located at 4105 U. S. Highway 12 East in Willmar, Kandiyohi County, Minnesota. Dahl reported that there were a total of 87 unauthorized credit card refunds between June 4, 2024 and August 7, 2025. The total amount of refunds were $173,199.77. The refunds were posted on 83 different custody accounts but the credits were applied to 8 unique credit card numbers that were no associated with the customers.
One of the credit cards was determined to be a legitimate transaction with a customer. Three system log ins were used to process the refunds. One log in belonged to MICHELLE ALLISON SLAGTER [DOB REDACTED]. The other two log ins were shared. Dahl explained that they conducted an internal review after a customer complained they did not receive their refund. The company interviewed SLAGTER on August 12, 2025. SLAGTER had no explanation for the refunds processed under her log in and the two shared log ins.
On August 22, 2025, Detective Rob Twedt conducted follow up investigation. He spoke with Dahl again who reported there were only two employees at the Willmar location – the branch manager and SLAGTER. All of the refunds were made from within the store on the company computers. It is common for refunds to be issued as a credit to the customer’s account rather than issuing a check or being given cash back. The customers had requested a refund to be credited to their account. However, the money was re‐directed to the credit cards not associated with the customers.
Detective Twedt sent administrative subpoenas to Visa and Mastercard to learn which banks the credit cards were under. After learning that information, Detective Twedt sent search warrants to the banks for account information. SLAGTER was listed as the account holder on the 7 credit cards. All of the refund transactions are shown on the accounts of the 7 cards other than one transaction for $3,000. The total amount credited to SLAGTER’S various bank accounts was $170,199.77. Detective Twedt spoke with SLAGTER on November 10, 2025. The interview was at the law enforcement center in an interview room off the lobby.
Detective Twedt explained she was not under arrest, could end the interview at any time or leave at any time. Detective Twedt explained the theft complaint and the records he received. SLAGTER admitted that she did own the bank accounts and did have seven cards matching what QC Supply had provided. Detective Twedt showed her a spreadsheet of the transactions from June 2024 to August 2025. SLAGTER looked at it and indicated that she did recognize some of the partial numbers as being accounts that she knew to be hers.
