Bad Service - Billing - Is this another *****

I had a 3G Data contract with Vodacom, 1st I was charged for 3GB while only 2GB was allocated to my account. I logged Service Requests with them as they kept on closing them without any feedback or solution. In December 2014 someone **********ly upgraded my data contract to get Samsung Note 4 @ R618. This was confirmed by Vodacom's ***** Department that it was internal ***** and I need to be refunded. The account was locked, and will be locked until they refund me, now Vodacom is coming back saying They have not received payment and are handing me over to the lawyers(The Vodacom sim I have does not work), What do I owe them for? . They confirmed they owe me and will pay me back. Is this another internal ***** by Vodacom?