Domain registrations are done real time and so as the payment so we do not offer a refund for it.
For .com and other gltds (.net,org, etc) they are processed instantly and can't be cancelled or changed.
For ccTLD like .AE, .QA. there is a cancellation window for orders within 24 hours and you only need to pay the 50 AED fee to process the change.
For orders processed more than 24 hours, no further change can be done.