I want to cancel subscription and get refund

Hello Apple Team,

I want to cancel a subscription on Ash app and get refund $29.99 that I was charged yesterday. I did not satisfy this app and did not see any cancel subscription button on my phone so I was charge the yearly fee after the trial period.

*so far, i have just used once on the first day I subscribe this app.

Please let me know how can I get refund as soon as possible.

Looking forward to get your support soon.

Thank you and kind regards,

Ha Phan (Ms.)

*Below is the app the I am mention about.

[Personal Information Edited by Moderator]