Petey,
When I was a lad, I thought it was cool to be "friends" with the sort of scofflaws that got you into this perdicament. But that's a dark road to head down.
As part of your rehabilitation, I suggest you cut this Bridge Troll and all other Bridge Trolls out of your life. These people are parasites, and until the Good Guys cut off their supply, the Bad Guys will persist.
You have the power, my friend. Say to these Bad Guys, "No more," and mean it, and act upon it.
~EmD