Trying to sort account account since May

My ADSL line was supposed to be cancelled on 10th May as I had sold my house and moved. I have visited the store at The Glen 4 times and I am still receiving bills.<br> <br> I have received the following Ref no. from Thavy Narain AI ***, then Vukari Majozi Ref 06-0815, then Ref ***A. Then finally Ref ***8 which was supposed to be for my refund.<br> <br> I again received a bill dated 17 Sept 2015 for R435.33 for the ADSL line and Telkom line. I went to The Glen once again and was told the account was closed so she was unable to log on. She said I should just pay the amount as it was probably and outstanding amount. I tried to explain the situation to her but she wasn't interested in discussing it.<br> <br> So what now.