There could be several reasons that a duplicate deduction occurs, including if multiple checks were issued on the same payday, such as a bonus check.
In these cases, the ZayZoon account will detect the overpayment and issue a credit on the account. Credits are reviewed by ZayZoon's Finance Team and approved once funds are confirmed. The employee will receive a notification once the credit is ready to be claimed. Typically, there is no action required by the employee.