Each ReCharge customer has a History log that details all actions taken on this customer record. You can view it by going to Customers at the top and search and select their name. At the bottom of the following page, you will see a section titled History. In this section, you will see all the actions your customers, you or the ReCharge staff made for this record. CUSTOMER, STORE ADMIN, and RECHARGE_ADMIN
If you want to have more data on the customer actions you can go into Reports > Customer Reports > Actions to export the data.