Unfortunately if it is a valid debt, you may not be able to get it removed. Call First Premier and get transfered up as high as you can in their resolution department. Once you are at the top of the food chain, they can see exactly what the status of the CO account is can call the collection agency it is placed with while you are ont he phone. They then can track down who to pay and take care of it.
That does not mean it will be removed and I think First Premier is not to good as far as GW's and stuff from what I have heard.