Airtime deduction

It was on the 14/04/2015 when I wanted to make a call that I realized my airtime had been used up. I knew I had R200 since I had made an enquiry on Saturday but to my surprise everything was used up. When I called cellc I was told that I had made a download on the 13/04/2015 and when I informed the call centre agent helping me that I never do such on my phone and I know I hadn't she said she will ask for a validation to prove that I had made the download. <br> <br> 3 days later I got an sms to say that the transaction had been validated. I called the 140 to get the results of the so called validation and I was moved from pillar to post. I have been making calls since and I am getting to joy. Everytime you call you speak to a different person and you must relate your story. I spoke to a Philisiwe and she said she will ask a Tshepo from the back-office to call me back with the report, she was sending an e-mail to that Tshepo and he would call by the end of the day and she would cc her teamleader. 3 days down the line no phone call was forthcoming and I called in again. I am still waiting and it seems like Cell c does not care about my feedback. I must be re-imbursed. I didn't download.