Track deletion history on voicemail

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Is your feature request related to a problem? Please describe.
If a voicemail is left by a caller, listened to, and then deleted, there is no historical record retained at all. That means the callee can claim that no voicemail was ever received which complicates auditing and followup. I also have no way of knowing how many voicemails were processed during any time period which could help planning for additional resources or understanding staffing needs

Describe the solution you’d like
When a voicemail record has been deleted, retain the record of it and change the status to “deleted”. When the /phone/users/ API is used with voice_mails and a time period, display them, as they are not when not deleted except with a status of deleted: “status”: “deleted”

Describe alternatives you’ve considered
I plan to use a webhook for now to track when a voicemail has been left but a more complete solution would be helpful

Additional context
Just curious as to why a record of the voicemail would NOT be left. Seems like a security/audit failure not to have record of it somewhere