So my sheet says private and none of your friends can open it however it has been emptied also the pistons from our door have gone

You mean chests, right? Also, could you provide more information in order to help us help you? I recommend editing your post to include the "griefing report" form from the following linked thread and filling it out

 [Format] Ban Appeals, Server reports

Hi I'll be on at about 3 could I talk to mod on weed and show you?

 Timezones can be really, really odd. 3:00 of what timezone?