Returned equipment in April

I was having trouble returning Storm Ready Wi-Fi unit. I had filled out the form numerous times but never received an email on how to return it. A customer service representative called me about a survey that I filled out. She told me to take the unit to a Xfinity store or return the unit to UPS. I took the unit to 289Ridgewalk Parkway, Suite 112, Woodstock, GA 30188. They told me they couldn’t take back the unit because they weren’t a dedicated Xfinity store. I then returned the unit via UPS. I have the receipt with information from equipment. Next bill comes out after the unit has been received and I am still being billed. I contact Xfinity numerous times (I saved all the correspondence) and finally someone on a chat gave me a credit for the $7 and had me do a new contract. In the process of doing this, I was charged the entire rest of the contract on the Storm Ready Wi-fi (which at this point Xfinity has had for over a month) on my latest bill. I spoke with over 5 agents via chat (they kept transferring me) for over 2 hours. Someone finally called me and opened two tickets. As of today, both of those have been denied and closed. This is my last effort to resolve this. After this I will be going to the two news stations locally that handle consumer complaints and send them all the information that I have. It will be an easy story considering I have all the correspondence and the receipt where everything was returned.