If you fight this and then it seems to have gone away you may find that they attach something to your credit rating, which will cause you difficulties further down the road when you trying to get a mortgage or a job as a spy or something. This happened to me during the mortgage application process, and for all the steadfastness I had felt before it went away when the mortgage might got refused and immediately paid up the disputed amount.
If you fight this and then it seems to have gone away you may find that they attach something to your credit rating, which will cause you difficulties further down the road when you trying to get a mortgage or a job as a spy or something. This happened to me during the mortgage application process, and for all the steadfastness I had felt before it went away when the mortgage might got refused and immediately paid up the disputed amount.