I made a transaction the other day from an online site but then canceled it. I dont see the payment I made on my PayPal nor do I see a refund happening. In my activity it shows I haven't done anything since November. But it went through on my bank account etc.
I understand your concern about the payment not reflecting. Do you recall making the transaction as a guest checkout (without logging in to PayPal)? These transactions will not reflect on your PayPal but, you would receive an email receipt on the email address entered while making the purchase.