RIDICULOUS BILLING & LATE RESPONSE TO QUERIES

I'm so dissapointed with Jet Stores. Early last year my account was handed over since I was retrenched Aug 2013. It came to my surprise this year that my account was increasing everytime I try to make a payment. Last month I asked for my account statements - to see exactly the charges that they bill me. It came to my surprise that they were still charging me for the airtime contract that I cancelled years ago. <br> 18 nov I received a letter via email that I need to make a payment arrangement before 03/12/2015 an amount of R2083, by the 2nd dec I received another email telling me to pay R2157...I got so furious and ended up borrowing money so I can settle the account. I was told that they will give me 20% discount so instead of paying R2157 I will pay R1700. I agreed and that same day (02/12/2015) I payed R1700. I was told to contact Jet for cancellation letter after 7 days. <br> This morning I foned Jet Customer service, and I was told to pay R283 inorder for my account to get cancelled. That came through as a surprise because I was only told to pay R1700. <br> I have been trying to get hold of them since this morning and unfortunately no pne has responded to any of my emails