An admin or staff should be able to sort this out. Would you be able to take a screenshot of the damage caused and possibly a photo of your Tardis before it was griefed? Thanks!
Just upload the images to a image service (e.g. imgur) or a cloud service (Google drive) and share the link.
my house gets griefed every day, broken windows, missing floor, stolen redstone lamps, no one has EVER replied back or offered to fix it
Where is it at? If it's near spawn it will be griefer sooner or later by some inconsiderate people. There are so many reports of these issue and not many admins are online at one time, so either are busy helping others with this issue or didn't see your comment as they were offline or the server chat was full.
I'm sorry for what you have at the moment. I had the same issue, (my house was near spawn) so I moved out of spawn!