i hate having to "pay" for others who make a mistake

[SS Shaun]

literally pay! so at my job since i got my promotion back in Oct my retirement needed to start coming out of my paychecks starting in Nov. So i made sure in human resources that she was aware of my retirement and that it will start coming out in Nov. I got my first check in Nov and i noticed my retirement didn't start coming out. I went to her right away and told her hey something is not right my retirement didn't come out. She told me "the other district took it out of your paycheck and you are paid until Jan." So I called the other district and asked her. She told me no you are paid for the month of oct. and they need to start taking it out in Nov. so i went back and told her and she swore up and down i as good until jan. she even printed out for me and showed me. I figured i can't fight it anymore she proved it to me. I get a note on my desk monday telling me there is a mistake and they need to double my retirement because it wasn't taken out for the month of Nov, Dec and now Jan. so until march i have to pay an extra 200 bucks per paycheck plus the 200 to keep me up to date. So for the next 3 or 4 pay checks i am going to be down $400! thanks a lot human resources for making my next two months hard on me.
i know what i will be doing when i get home