First of all, If the grief keeps happening in your place, leave the grief alone. Let alone the staff member fix it.
If you do not want to be called by a staff member to redirect them to the place that was reported for grief, atleast provide XYZ coordinates.
- To know who break the blocks, type /lb tb and right/left click the area where destroyed blocks are.
- Take a screenshot of the grief incident with debug info (F3 key)
- The screenshot key is (F2 key) and you can see it on "User\AppData\Roaming\.minecraft\screenshots\"
- Upload it in imgur.com or in this forum.
Same goes for bug exploits and other area reports.
Report a bug? Send a message to Pri (server owner).