Account in arrear because of Chantel!

I laid a complaint with Vodacom months ago for my account my device, SamsungTablet 10.1, was in dispute. Chantel at the store who handled my dispute NEVER EVER gets back to me. No one EVER gets back to you. And when they want you to pay for your account they do all in there power to get there money. How can I pay for an device that is blacklisted, that I didn't even do in the first place? I didn't cancel the device, I don't even have a sim card for the device, but I must pay? the thing has been with Vodacom almost a year, not in my possession. No one at Vodacom can deal with issues to my, not even the legal department, of which I also email, but never came back to me. How can I be liable for the whole contract. <br> How can I pay R6000.00? <br> I need urgent attention into this matter. and my account is running up a bill that I didnt cause.