Dramacove Keeps Charging My Mercado Pago Card Without Authorization

I have a recurring charge problem related to a Dramacove subscription that I cannot locate or cancel. I never downloaded any Dramacove app; I only accessed it through Facebook, and I do not know where to manage or end this subscription. On my Mercado Pago credit card, Dramacove charged me 25 USD on 9 October, 130 USD on 16 October and another 130 USD on 23 October. I did not intend to authorize these repeated dollar charges and I am worried that they will keep occurring every month, because I have not found any option to cancel the subscription either on Facebook or in any app store. I request the immediate cancellation of any subscription or recurring payment linked to Dramacove and that all future charges on my Mercado Pago card be blocked. I also ask for written confirmation of the cancellation so that I can be sure no new Dramacove payments will be made.