Found my bike!

I accidentally locked my bike to itself, naturally someone grabbed it. I considered it gone. Until a few weeks later, I found it locked to a tree fence with a new chain plus my lock dangling on the top tube. I added a third lock and left a note with my info, but it was ripped off the next day. After a week of no contact, I put up another note offering a small reward, but still no response.A lady suggested I just cut the lock and take my bike back. Should I do that? I dont have an angle grinder. What would you do?