I didnt apply for a contract phone with Vodacom

Debit order of R 238.58 went off my account 17/12/2015 & went to the bank during January 2016 to do reversal. I called Vodacom 082111 to enquire n they told me that I have app**** for a contract phone which is in use, I explained to them that I have never app**** for a contract phone and the phone is not in my possession as well(meaning I have never received it). I was told to submit the following documents: certified copy ID, Affidavit, letter and promised that the matter will be investigated, resolve and I will be informed. I did send via email stating Ref no on the subject mail but to this day their consultants send me from pillar to post when I enquire how far are they with the query. Today(09/02/16) when I called the lady who was assisting me told me that the query is closed and doesn't reflect any documents received from my side. Peter please help me as I am sick & tired of this and its also messing my ITC status. Vodacom is unreliable as they keep on saying no documents received as I have a thank you mail for documents received from them. This must be resolved as soon as possible because they keep on debiting my account for the phone I didn't apply for and don't even have.