We understand your situation and we'd love to help. Please submit a ticket to A+ Rewards Support with the Taobao refund details in your Touch 'n Go transaction history and we shall look into this for you. If the conditions fit, a Taobao voucher with the corresponded refund amount will be provided.
Example of a Taobao refund in Transaction History:
You may refer the below for the steps to raise a ticket:
https://support.tngdigital.com.my/hc/en-my/articles/4407437809561-I-have-submitted-support-ticket-for-A-Rewards-how-do-i-track-it
We're working on delivering a better voucher usage experience for you. Thank you for your patience & support with A+ Rewards.