***** and vodacom still bill customer

Sir I have been a customer of your business for the past years of my life and found it very hard to switch between networks. Today I have a unauthorised line taken on my name to which I did not activate and to date I don't have the line at hand. This billing for this line appears on my vodacom statement for this month. Please note this line was activated in January 2018. I have always recommend Vodafone to family ,friends and business partners. I don't even get a call from your ***** department keeping me posted of my investigation. I have sent all the documents that was requested. I await your urgent response.