Long story short: Somehow T-mobile got it in their head I have had an account with them. The claim I owe them $165. I have never had a T-mobile account in my life. I was clueless about this until a creditor contacted me. I asked for validation within the proper time frame and they sent me single statement that said $132. I sent them a letter back stating that they had failed to validate the debt, don't report it, etc. All of this is documented, return receipts, etc. I checked my credit report and they have reported it.
My questions: What constitutes proper validation?