Hello @jeeteshkumarthakur-5264
Thank you for posting this concern on this community space.
I was having the same experience some time ago, but you may need to check the data retention policy set up for what you were saving or backing up on your service vault.
If it is a snapshot just as an example, you can do delete and undelete several times until you get fully deleted it or wait the time stated on your policy.
Furthermore, if this vault service is used for Azure Site Recovery, you can either disable replication on the source compute resource or not enable reprotection the compute resource or backup device.
Let me know if that was useful but if not, I can keep assisting you further.
Looking forward to your feedback,
Cheers,
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