If you feel you've been harassed or feel you've had your civil rights infringed upon then write a letter to your local MP.......that's what they're there for but don't cry over defects, please.
Whether you like it or not, you're paying them with your hard earned tax $$ so make them earn their keep.
Don't bother ringing them, write a letter........phone calls get lost, letters have to be filed which forces them to act (whether it's to your satisfaction or not is another can of worms).
I've had success in this manner many years ago when I was on the job and had my personal details accessed and given to a member of the public......it went from my local MP all the way to the then Police Commissioner Robert Brokenshire and guess which station it was tracked backed to?! (admittedly, I was doing obs in the Seaton area at the time).
You have to be prepared to follow it through though, and you have to be 100% in the right otherwise don't waste your time or tax payers $$.