Refund And Stop Auto Debit From My Credit Card

I unsubscribed from the DramaWave mobile app and received a confirmation of my unsubscription on 3 March. Despite this confirmation, DramaWave has continued to charge me every week as if my subscription were still active. From 12 March until 20 August, I have been charged every Thursday without interruption. The weekly charges were made on 12, 19 and 26 March; 2, 9, 16, 23 and 30 April; 7, 14, 21 and 28 May; 4, 11, 18 and 25 June; 2, 9, 16, 23 and 30 July; and 6, 13 and 20 August. Each week I was billed HK$156.24, and in total this has resulted in 24 weeks of charges after my unsubscription, even though I had already received confirmation that the subscription was cancelled. I have tried all the methods and instructions provided to stop these charges, but none of them have worked and the weekly billing has continued. This situation has caused me financial loss and unnecessary inconvenience. I kindly request that DramaWave immediately stops any further charges to my account and provides a full refund of all amounts charged after my unsubscription confirmation on 3 March, covering all 24 weekly payments of HK$156.24. I also expect a clear confirmation that my subscription is fully cancelled and that no further charges will be made in the future.