Unauthorised debit

On Monday 15 January 2018 at 2.51 I sent the ***** Department and email stating that Elite Mobile/Vodacom had upgraded my Ipad contract and all of a sudden more money was debited off my account. I phoned , I visited Vodacom shops to find out what cause my account to be so high. It seems a new sim card was added to my profile and I was billed for it. The call centre said that I had to get an affidavidt done at the police, with 3 of my signatures on it and send it to the ***** department. This I have done on 15.1.2018 and again on 29.1.2018 and I have had no response. Then I phoned the call centre ********** and they told me I need to contact the ***** department on ********** 877 and you just don't get through to them. I would say that this is pathetic and I want the highest person at Vodacom to contact me and explain why I have not yet had a response!!!! and please don't phone me -I work during the day - please email me !!!!!! I want you also to listen to the voice recording of the upgrade, where I specifically asked about the charges!!!!