This is a receipt for your latest DigitalOcean payment. Nothing is due at this time.
DigitalOcean Receipt - 2016-11-03 01:35:23 UTC
I had expired my cloud, maybe that was ubuntu 14.04.
But, I've just received receipt from digital ocean that was about my account for use
Why account was automatically paied? please check it and get a solution to receive lost money.