Vodacom Refuses to assist me regarding ***** but

Vodacom Refuses to assist me regarding ***** but they take money from my bank account. Someone took a contract sometime in May 2015 and money was debitted from my bank account on 27 May 2015 , i queried this on 28 May 2015 and submitted all the necessary documents on 28 May 2015 ,up until today 8 June 2015 i have not received a call from anyone in vodacom regarding the ***** case that was reported , i call in everyday and speak to several people just because they refuse to give me a direct contact number to do follow up. This is Pathetic service as i work in Telkom Mobile as a Team Leader and i make sure that i assist customers asap. I don't understand Vodacom as they are such a huge company but cannot assist me with my querie but i have to constantly go to the bank for bank statements and take time of work , this is poor service and it's costing me money to go back and forth. i think i should go put up banners and stand outside vodacom shops to inform others about their service and then see how fast they react.