Notes: please do not open a dispute at Paypal. It will make a long time to resolve the issue instead of maximum 4 hours with our billing team.
You need to give the Transaction ID to our billing team. They will search wit the transaction ID and will issue a refund sooner.
How to know the Transaction ID?
Check your email - the Paypal account - after you make a purchase you will receive a notification email from Paypal. In the content, it contains the Transaction ID as below picture.