I feel really bad for you, just tell me if there's anything that I can do for you...You are surrounded by a flower wall, I mean...you kind of had it coming.
I'm still a noob myself, but even I know that having your claim that close to a river/lake attracts unwanted attention, plus the wall (even when finished) can be "breached" using the boating exploit.
Don't get me wrong though, I'm on your side entirely and this really sucks.
“Man is the only animal for whom his own existence is a problem which he has to solve” - Erich Fromm