It's probably not to your advantage to do that since it comes off as a credit and it's applied to your bill. The reminding credit may not carry over so it's best to just use more points on the next month's bill.
I was double charged when I made my first subscription but my case was that they charged the same subscription twice. They did give me a refund in the end. I might have to have shown proof, I can't really remember. So it's possible they could give yo...
