These people are taking money from my check and I ...

These people are taking money from my check and I have never borrowed money....how do they get away with it, and when i try to reach them, there is no number to reach them at...i had to go put a stop garnishment, at the Knoxville courthouse to get it to stop, now I have to go to court to see why they have taken 25% of my wages for the last 2 months, and i never had a clue as to why or whom I ever owed money to in the 1st place...