For some reason my Spectrum (TimeWarner Cable) account was not closed 2 month ago. When I got an email that my bill was not paid I thought the final payment didn’t go through, so I paid it. When I received the bill this time I called Spectrum. The account was closed and I was told that I didn’t need to worry about this months bill and my previous bill will be refunded.
Update 10/23: I have received an updated bill from Spectrum with $0 ballance.