<prompt> Human: Ive been getting collections notices from a debt collector on a thousand dollar debt to comcast. But, its definitely not my debt - I am a comcast customer but Ive never been late with a payment. I called comcast when I first got the notice and they rattled off an address that isnt mine that is associated with the debt. I opened a service ticket with them to have it looked at, but they havent done fuck all with it since I opened it. Every time I call them about it they tell me it is being routed. In the meantime, I keep getting letters about this debt. I dont want this to hit my credit report I have a score in the 800s and have to deal with this mess. What can I do to fix this since comcast isnt doing a damn thing to help me?  <response>: Is your name on the letters? Make them validate it. Send them a letter certified mail, return receipt telling them that they must prove this debt is yours and provide the documentation that proves it contract, billing statements, etc with your name and information on them. Dont just ignore it, because they can report it to your credit. 