Highly disappointed!!!!!!

I bought a router in January and to my surprise two routers were delivered to me days apart. I requested a cancelation on the one router as I only wanted one. They collected the one router the following week. Still sealed. Ten months later it came to my attention that I have been billed every month for both routers. For the router I currently have and the one they collected. The cancelation process has been going on for close to 2 months now with no updates or anything in between. I keep calling and every time I call I am told a new case is opened.