Cancel My ReelMira Subscription

I am a user of Reelmira with a weekly subscription that has been charging me through Google Play and/or Facebook since 30.10.26. I no longer wish to use this service and I want my subscription to be stopped. I am clearly requesting that my weekly Reelmira subscription be cancelled immediately and that there be no further charges to my account. I also ask for written confirmation that my subscription has been cancelled so I know that no more payments will be taken. I am having difficulty cancelling the subscription myself, so I am asking Reelmira to handle the cancellation on their side as soon as possible.