feat(obj): update

Author: SamyOubouaziz

pages/object-storage/troubleshooting/deleted-objects-still-billed.mdx

@@ -1,6 +1,6 @@
 ---
 meta:
-  title: &title I am still getting billed for deleted objects
+  title: &title I am getting billed for objects that I cannot see
   description: &description I don't understand the amount billed compared to the objects that are present in my Scaleway Object Storage bucket
 content:
   h1: *title
@@ -20,10 +20,42 @@ dates:
 
 ## Problem
 
-## Cause
+The amount billed does not correspond to the objects that are present in my Scaleway Object Storage bucket.
+
+## Possible causes
+
+- Your [bucket is versioned](/object-storage/how-to/use-bucket-versioning/), and multiple versions of your objects are stored in it, incurring extra cost.
+
+- Some [multipart uploads](/object-storage/api-cli/multipart-uploads/) are ongoing. The storage used during the upload is billed, but the object is not visible as long as the upload is not complete.
 
 ## Possible solutions
 
+### Bucket versioning
+
+1. Check the versioning status of your bucket via the [Scaleway console](https://console.scaleway.com/object-storage/buckets), or using the [GetBucketVersioning](/object-storage/api-cli/bucket-operations/#getbucketversioning) command:
+    ```
+    aws s3api get-bucket-versioning --bucket BucketName
+    ```
+    - If the versioning is `disabled`, the issue is not linked to versioning.
+    - If the versioning is `enabled` or `suspended`, you may have multiple versions of your objects.
+2. Use the [ListObjectVersions](/object-storage/api-cli/bucket-operations/#listobjectversions) command to list the versions of the objects in your bucket:
+    ```sh
+    aws s3api list-object-versions --bucket BucketName
+    ```
+    A list of all the objects versions and delete markers present in the bucket appears.
+3. Delete the unwanted versions and delete markers using the [DeleteObject] command with a versionId specified:
+    ```sh
+    aws s3api delete-object --bucket BucketName --key ObjectName --version-id ObjectVersion
+    ```
+Refer to the [official Amazon S3 documentation](https://docs.aws.amazon.com/AmazonS3/latest/userguide/versioning-workflows.html) for more information on how versioning works.
+
+### Multipart uploads
+
+1. Check if some multipart uploads are ongoing using the [ListMultipartUpload](/object-storage/api-cli/multipart-uploads/#listing-multipart-uploads) command:
+    ```sh
+    list-multipart-uploads --bucket BucketName
+    ```
+
 ## Going further
 
 - Refer to the [bucket policies overview](/object-storage/api-cli/bucket-policy/) for more information on the different elements of a bucket policy.