You can report charges which you do not recognise by contacting the support team of Huawei AppGallery.
Below are the articles that may be useful for you :
How long does it take for the refund to be credited back into the Touch 'n Go eWallet?
How do I check my Huawei AppGallery purchase history?
Are there any additional fees when using Touch 'n Go eWallet for Huawei AppGallery purchases?