Refund

Description

Hi all. I have sent money to purchase a used laptop from someone and i have used PayPal protection. After like 5-10 minutes i have received an email from PayPal that the person has refunded my money back which the seller told me he has not done that. I have checked my PayPal app and i can see that i got a refund from the seller. I have not got my money back from PayPal yet to my bank account, not sure if it will take some days to clear up. Would like to ask though if anyone else had this similar issue before and why has this happened? And also i will i get my money back? Or should i be worried?