Invoice after cancelation

In January I cancelled the ADSL portion of my line. This was done in February after the notice period. After that the home uncapped basic still appears on my invoice and I have no choice but to pay for something I don't have and don't use. After moving house I decided to cancel my entire account as I have no use for it. I gave my 30 day notice and still get an invoice for 2 months worth of service that I don't have. <br> <br> I find this unacceptable and unprofessional.