Pathetic service/no feedback/misleading informatio

Good day,<br> <br> In January 2015 I took an upgrade with the I store Centurion. When I upgraded my contract I informed the lady that assisted me that I want something similar to my previous contract which was a top up,she informed me that contract is not available however she can put me on the anytime 100minute contract and if I use any of my bundle up I can just add more.To my surprise I got a huge R2000. bill in April.I enquire it by Apple and to my surprise I was informed that the lady that assisted me at the branch has since been dismissed for not disclosing the proper rules of the contract, I have been going to the Istore numerous time to be told that they are looking into the matter and will get back to me, to this date I have not heard anything from them unless I follow up myself!<br> <br> Really pathetic service- even after I spoke to many people/managers at the store and they promise to get back to me.<br>