Vodacom ***** complain

Hi I have a contract with vodacom,which a took via dion wired on a laptop which I'm paying R399 for 1Gig data.on may I discovered the was a ***** done on my contract which someone authorised an upgrade in which I didn't know anything about. So I contacted vodacom shop at the grove mall.the told me to contact the police and make affidavit,copy of I'd and sign three times on a blank page.I did that on the 3rd off June this year. The gave me a reference number,that was the last time I headed anything from vodacom.I was also given a ***** contact number which I called couple of times bt no one picks up.I went to vodacom again I told them and I was told that the ***** number was only accessible to vodacom employees only. And they tried calling for me.still no one picked up.the worse part is I told vodacom that this matter must be speedily resolve be cause my contract is coming to an end on 15 July 2018.this is the worst ever bad service I've experience. I had to even reverse the debit order for this month as they took an amount of more than a thousand rand.which they suppose to take only R399.as soon as they solve this matter I'm leaving for good.be cause they don't even care about their customers. I mean since I've log the call no one have contacted me just to say they acknowledge the complain.and lastly I was told that the ********** took place at kzn while I live in Pretoria.