I’m sorry to hear that, and I’d love to get to the bottom of this for you. If you go to your latest bill, you will see what these charges are for specifically. You can see this if you go to your admin and select Settings > Billing, and click on your latest bill. You can download this bill to get a detailed PDF file to save for later use.
Can I ask if this app is the Adscale you mentioned? If so, it looks like this app does have a monthly fee after the initial 14-day free trial period. It is best to contact our support team so we can check this out in more detail. If this is a legitimate charge (the app was installed for a full 30-day billing cycle while the store was active), then we will be limited by how much assistance we can offer. However, we will do our best for you here to see if any kind of refund is possible. You can click this link to contact our support team to begin a live chat. We can take things from there!