Completely at a loss

I’ve been trying to return a Mobil device that was sent to me incorrectly. The backstory to how I got this phone is long and also another frustrating situation. 
I called and had my phone deactivated and was told a return label would be sent. Then I did not get a label and instead immediately got an email saying my device was reactivated.

I call again and was told the device would be deactivated and the manager approved a return label even though it was past the 14 day return. Gee, thanks….

I still get no return label.

I get charged $35 today so I call again and am I told they cannot give me a return label but provided me with a tracking number to have fed ex print one out for me. I go to fed ex and they tell me that is not possible. I look up the tracking number and it’s from when the phone was originally sent to me? 

Im not sure what to do. The phone is still sealed in a box. I was told someone incorrectly signed me up for this service along with others. Yes, I signed a consent form I did not read completely because the agent assured me this was the only way to re activate my account when my cable and internet stopped working one day. A new agent told me that was incorrect and proceeded to cancel my previous agreement and had me sign a new one. 
can I please just return this phone and continue being a Comcast member like I have been for years and years?