i want to return my itunes giftcard uae 100aed

1.

i bought ut yesterday util now i didn't use it

Based on -> Apple Store Gift Cards -> Legal - Apple Store Gift Cards - Apple

• Apple Store Gift Cards have no expiration date; however, Apple may amend eligible purchases and locations for redemption with appropriate and reasonable notice by updating the Apple Store Gift Card terms and conditions at Legal - Apple Store Gift Cards - Apple. 

2.

i want to return my itunes giftcard

It is not possible, see -> Check your Apple Account balance -> Check your Apple Account balance – Apple Support (UK)

scroll to ⤵️

If you have an Apple Account balance that you can’t use

You can't redeem or return Apple Gift Cards, App Store & iTunes Gift Cards or unused Apple ID balance for cash, except as required by law. If your jurisdiction allows the refund of redeemed gift balances, you can contact Apple Support to request a refund. 

When you contact Apple, include the following information:

•           Your Apple ID.

•           The refund amount.

•           Your current delivery address.