Im being charged for a phone they sent me that I never ordered or never activated.

I called to upgrade my internet speed. The rep told me I get a free phone line with it also. I told her I didn't want or need a phone. She said it comes free with the internet unlimited 1000 plan. I told her her i still do not need or want it. She said ok. I got a phone in the mail a week later. I never activated it or used it. I called and they said they will get it fixed and send me a return label. Few days later I got $30 taken out of my account for a phone bill. It was a separate account and separate billing from my internet plan. I called again and after 2 hours they assured me they would cancel the phone and send me a return label. That was 2 or 3 weeks ago. Today I got charged $30 again. I'm looking for another internet provider in my area. I'm guessing xfinity will try to keep billing me because I have the phone and I cant send it back because they will not send the label or give me the address to pay for postage myself. I had to get my credit card changed so they don't auto bill me again. This is the worst customer service I have ever gotten from any company.