Once the refund has been approved by Apple, it will be credited back into the user’s eWallet within 30 days.
Find out more on exclusive promotions and new features, such as subscription management and billing history, in Apple Zone.
You can click on Apple Zone in the main page upon opening TNG eWallet.
You can also enter Apple Zone by clicking【More】at the Touch n' Go home page and find【Tickets & Entertainment】and click on the Apple icon.
Visit the Apple Zone FAQ page for more information.
Below are the articles that may be useful for you :
How do I request a refund for App Store and iTunes Store purchases?
What should I do if my money is being deducted from the TNG eWallet but not reflected on App store?
What should I do if my funds were wrongly deducted?