Dispute charges

Hi, I am writing because I am seeing a few apple charges consistently that are not showing up in my Subscriptions area. I am concerned because they are adding up each month and I cannot figure out what they are. One is for $3.99 and another is for $12.98. I have no clue what these are for. I am not signed up for any subscriptions or apps that add up to that amount! Help!

-Lorenna