I created some EBS volumes on some Linux instances. Then I terminated the instances but the volumes were still there (I forgot to check the Delete on Termination setting).
When I went to billing I saw that I was charged for the IOPS of those EBS volumes -- approximately US$8. So then I removed them, even though they were no longer attached to the instances (they were just there but with an available state).
Today after almost a day without EBS volumes in my AWS account I see that the billing is US$13!!! I checked the billing details and it all charged to IOPS of the EBS volumes even though I already removed them yesterday! I need to stop this right away.
I opened a case yesterday in AWS and the case is still unassigned. Anybody knows how EBS volumes are being charged? HELP! Thank you!