I got charged $100 even after I cancelled my subscription and deleted my account

How can I get it back?

I only intended to use it for 7 days. I forgot to cancel it right after so I got an email saying payment unsuccessful (I had <100 in my account), so I cancelled my subscription and deleted my account.

Now that I have >$100 in my account (~5 days after) I immediately got charged $100 from Musescore.

How can I get this money back, and will they keep sending me payments?