The deduction might be from your subscription (such as video/music membership) or the upgrade fee of iCloud Storage generated by the iOS device linked to your Touch n' Go eWallet account.
You can check your billing details by clicking 【Purchase History】in Apple Zone.
Reminder:
it is recommended that you need to check whether the Apple ID in the upper left corner of the billing page belongs to you or your family members; and you can also check whether the purchased item had been downloaded in your device.
If you have any further questions about your purchased item or Apple ID, please contact Apple Support: https://getsupport.apple.com/.