Getcontact Trial Subscription Won’t Let Me Cancel Before Billing

I started a trial subscription in the Getcontact app about 6 days ago using my Apple App Store account registered in Russia. I now want to stop this trial before any money is charged to my card. When I tried to cancel the trial, I could not find the Getcontact subscription in the App Store subscription section or in the settings of the app, so I am unable to cancel it by myself. Because of this, I am worried that after the trial period ends, money will be automatically charged. I request that my GetContact trial subscription be cancelled immediately and that you confirm that no payment will be taken from me after the end of the trial period. I am ready to provide screenshots or Apple receipt information if needed.