Vodacom commits ***** against me

I received my March 2018 account which included in it the usual information and costs. However, there was a second mobile number listed for which the account was due to charge me R160. I do not know the number and my previous (February) had no such number or charge on the account. I called customer care. I was given instructions to prepare an affidavit certified by the police, copy of my ID card and scanned copies of these documents plus the offending account to be sent to *****dispute @ vodacom.co.za . I sent these documents and heard nothing. After about two weeks I called the ***** department. Spoke to a helpful lady who requested I send the docs through to her. I did so. I have heard nothing from vodacom, and my April accoujnt has just arrived correctly reflecting that the R160 was deducted from my account in March but showing no such amount on the April account to be paid this month. I demand a refund from Vodacom. PLus it would be in order to have someone contact me to explain how such a ********** charge could have found its way onto my account. Silence is the worst sort of customer care!!