149592,
The call has been answered by Voice Mail and they left a message the call can't be returned to group and why would the caller want to be; at that point they expect a call back.
The problem you have here is that the Voice Mail doesn't know where the all came from to send it back to that device; if it is a Hunt Group.
The only thing you could try is instead of Recalling the caller to Voice Mail you Overflow them to Voice Mail and tell the user to finish the Voice Mail by pressing #; I think it is #. That way the call doesn't leave the Hunt Group and keeps its position in queue, but that is not normal or expected by any caller to leave a message if they are going to continue to stay in the Hunt Group; who would.
Are you sure that you understood what the customer really wants?
Thanks,
TE