TennisDirector provides for each client, a financial statement that includes all purchases (reservations, memberships, pro shop...), payments and account balance.
Cancellations of paid purchases can be refunded into account. Later, when the client purchases another item (reservation, pro shop...) the system will highlight that there is a balance that can be used for payment.
Clients may "deposit" payments directly into their accounts to pay for current or future purchases.
If the client has a credit balance in the account, that credit may be used to pay for any purchases.
At request from they clients, facilities may transfer amounts from one client to another.