WebPT Ideas and Discovery

When clients make a portal payment, there is nothing immediately shown that confirms that the payment was made, accepted, processed. went through etc.... My clients have gotten confused and then made a second payment thinking the first didn't go through.  Having some screen or acknowledgement or confirmation number or something that confirm their credit card payment was just processed would eliminate this confusion.  Otherwise the client doesn't get confirmation until I get notification of the payment and can send a receipt ...which won't be until later.  I think being provided that immediate  info when making any online payment is usually standard in most other industries (i.e. even when purchasing something online you typically get an immediate confirmation).  Thanks!