This happened to me last summer, I thought had changed my plan before my subscription rewned. I just made a support ticket and was contacted quite promptly. First public refunded the money back as bill credits, which yes would have been very helpful for the bed month. But I was able to have I refunded back onto Visa/Debit, when explained my financial situation, though was appreciative of being refunded for bill credit, but though it wasn't a huge payment it was funds in which was needed to be paid elsewhere. I believe it was within that day or he next in which I was fully refunded.
Contact support and create a support ticket, explain your situation. 🙂
