Thanks for reaching out to the Community, @adrisa8105.

I want to ensure that you properly dispute a payment refund made by a customer on August 3, 2020, in QuickBooks Online.

I recommend reaching out to the Payments (Merchant Services) Support Team for further assistance. Rest assured, they have the tools to assess your account in a secure environment and get the transaction disputed right away. You can let me know how the conversation goes by commenting below.

I'll be here if you have any other questions or concerns. Take care!