Dex Media Supermedia Continue taking money out of account after canceling subscription. Nationwide

I signed up with Dex (supermedia at the time) in April 2013.  It was a year contract.  I had to call several times due to no traffic to my website and explain that they needed to change my keywords. I was told it would be corrected by several different representatives.  However this was not corrected and I became extremely frustrated and demanded that my subscription be cancelled.  I was told it would be.  Nope,  I was billed again the next month.  I called several times after that to express my concern and was assured it would be taken care of.  I accepted that I would have to suffer through until my contract date;  paying the minimum fee providing no services to me,  until April 2014.  I was told my last payment would come out In June.  It is July and once again a charge has been taken out.