How to Cancel ReelShort When It Does Not Appear on iPhone

I have been repeatedly charged for a ReelShort subscription even though I have tried to stop it and it does not appear anywhere in the subscriptions section on my iPhone. The first unwanted deduction that I noticed was in September 2023, and the charges have continued despite my attempts to block them. I even blocked my previous credit card and provided a new card, but the subscription fee is still being deducted. After the new card was activated, an 895.00 PHP charge again went through, as shown in my RCBC Credit SMS messages. As seen in the attached bank messages, for example on 30 September, 7 October and 14 October, an amount of 895.00 PHP was charged to me for ReelShortW-1578866558 / ReelShortW-157866558. Since I cannot see or manage this subscription on my device, I have no way to cancel it from my side. I am clearly and firmly requesting that this ReelShort subscription linked to these references (ReelShortW-1578866558 / ReelShortW-157866558) be completely cancelled without any further delay and that all amounts wrongly taken from my cards since September 2023, including each 895.00 PHP transaction, be fully refunded to me.