I have written XXXX certified letters to this Debt Collector challenging the accuracy of debt attributed to me. I have never had an account with XXXX XXXX XXXX. I asked to send me documents to back up their claim. Nothing is forthcoming but the debt collector continues to report this to XXXX and I believe XXXX. There was a problem with identity theft when I was in XXXX from XX/XX/XXXX - XX/XX/XXXX.