Reimbursements are completed based on the reimbursement schedule your organization has selected. Consult with your admin if you need clarification about the schedule your company uses. Also, take into consideration bank processing times, which are affected by holidays and weekends.
It may also be a good idea to check your expense management settings (from the TravelBank left navigation menu, select "My Account" > "Expense Management" tab). Ensure that you have entered all the information, such as the bank name, and that all the information is correct.