Help Please!

I was with my ex boyfriend for a little over a year and we broke up. I am one year older than him, I am 18 but he is still 17 (a minor). I had put my debit card on Doordash which is an app that orders and delivers food to you months ago while we were still dating. Recently, I have noticed my card has been getting charges for the last past three months for doordash orders I have not placed on my own account. A month after we broke up, I noticed he had used my card to order food and I confronted him and he said he did it by accident and he will pay me back. I then told him to delete my card off his account, which I assume now he didn’t do. I tried to contact him to give me my money back but he is denying it was him who made the orders and is refusing to send me a screenshot of his recent orders on his doordash account. He then proceeds to block me on all forms of social media so now i am unable to contact him in any way.

I am unsure what to do, and I feel used and violated. The orders totaled up to around $200 and I would like my money back. Can I take him to court even though he is a minor? Do I even have a “case” that I could win and fight?