Hello,
Which cloud disk mode do you purchase? Yearly/Monthly? Or Pay-per-use?
If you use pay-per-use, the unsubscription will not be charged. If you use yearly/monthly, the unsubscription will be refunded based on HUAWEI CLOUD refund rules and the disk capacity will no longer be used.
For more information about purchasing HUAWEI CLOUD disks, see Elastic Volume Service.
For details about the unsubscription rules and operation methods, see Billing Center User Guide.
Hope this helps
Thanks