I created two sales receipt but did not email them to a customer. I received an email that money is on the way in the amount $6,750. Please advise.
Great question! I think I can shed some light on what might have happened here. Sales receipts are typically used to take a payment instantly, while invoices can be e-mailed to a customer for them to pay at a later time. When you created the sales receipt, if you have the customer's credit card information saved and the process credit card button is checked, it will process a payment.
Here's a screenshot showing that button:
If you uncheck the button, it won't process the payment when you save it.