Did they ask you to drop cargo or anything?

no nothing i just had enemy contacts
bunshuws were hostile colored red like enemies but according to my char screen i was neutral to them

Neutral units/bases will convert to hostile if there are any hostile units in the area that are allied/neutral with the neutral faction.

In other words:

If you kill a Hessian in front of a Bundschuh(or however the frick that's spelled), the Bundschuh will become hostile as well. Likewise if you kill a Hogosha in front of the Kusari navy, a Daumann in front of a Rhineland cop, and so on and so forth.

Even if the hostile just shows up but you don't kill it, their friends(if they aren't already your friends) will turn hostile as well, until you leave the system and try again.

Reaper: $200,000,000.
Rockets: $100,000
The look on that pilot's face when you launch a full pod of screamers up his tailpipe: priceless

Same thing happened to me. I was FINALLY neutral with the Bundschuh and made my way to theri base, just to find 3 weapon platforms, a base and a whole bunch of fighters pummeling my lvl10 shield. (Didn't do them much good though)
Problem was, I couldn'T kill them or else I would've gotten them into the red again. (Thus making 1h of Rheinland Police blasting pointless)
Finally got to them in the end though. Blasted some GMGs and then finally was able to dock with them.
Bribed the guys for a HELL of a lot of money and then got myself a sunslayer torpedo launcher
(Which I instantly fed to thsoe damn weapons platforms right outside the bundschuh base, it's really too bad you can't kill a whole base!)

Murphy was an optimist.
*I* am a pessimist[!

LOL, they regretted selling you that then. The same thing has happened to me a few times. If you just leave the area and come back when the other party is gone, the base should be neutral to you again. (Or blast the ones causing them to temporarily convert, then come back...teach them a little lesson...)