OVER-Estimate Usage: I have no problem paying for the gas I have actually used, but when I receive NICRO Gas bills that start and end with estimated readings then I have a problem. I have a vacant dwelling and I have received three monthly bills that are ALL estimated readings. Each month they continue to read higher and higher billing amounts. For the past three months, no one has been living there or using any utilities in the dwelling. They billed me for 23 CCF during the hottest months of the summer on a vacant dwelling. I am livid and unsure who I could seek assistance from on this matter, I would like to have my bills adjusted. No Intention of Shutting Of Gas as Requested: Another matter with NICOR is that I have called them for the past three months and requested over the phone that they SHUT-OFF the gas. Each time they have indicated they would handle my request, but they never shut-off the gas service adn continued billing me for estimated usage. Today I was told I needed to put my shut-off request in writing, so of course I typed up a letter and sent it immediately. Again, I feel this is a very deceptive billing practice and I wonder if I could receive any type of assistance with this matter? Any suggestions would be appreciated...