If you have cancelled with the buyer's agreement, therefore selected the reason ... Buyer Requests to cancel, this will fully refund your buyer and your seller performance will not be affected.
If there is no money in the available section in your eBay Balance then the refund will be made from any pending payment, or from the bank account you nominated for this purpose.
When the case is finalised with the refund any money pending / or on hold will be released to you.
@kjpittaway2023