Repeated failure to resolve the problem

I have been going through this for a year! I've proven the debt is not mine, I've provided all the documentation and had multiple phone conversations yet the debt keeps returning to my credit profile. The collection agency is blaming Xfinity and Xfinity is blaming them while I'm the only person who is truly affected. I am very confused as to why this has to be so complicated. I've done the hardest work by proving that it's not my debt! I have grown very tired of having to repeat the events over and over again and based on previous posts here, Xfinity has an issue with fraud cases. I've talked to no less than 10 people to resolve this and I cannot get it done. Finding the right person to talk