Currently my friend, annihilatecats, has a house that he lets me use until I can buy an actuall plot, or until we become residents. I help him out in adding additions to his basic house. We have an underground farm below our house which we share. I have logged on twice now to 2 blocks beside our door being broken, and all of my reeds on stage 1, and my wheat freshly replanted. If you can help me figure our who did this, and warn/ban him, that would be helpful.

The coordinates to the house:
X: -2277
Y: 74
Z: -448

Please help.