Accounting (prepayment) problem

So, I accepted a prepayment of deductible for a scheduled surgery and entered it into Payments as a prepayment. The surgery was eventually scheduled and I returned the prepaid amount to the patient. How do I make it disappear from my books so it doesn’t appear perpetually as a credit on the patient’s account?

@Mouse55

Try entering negative payment amount.Hope this may help .
Thanks
Visolve