Handed over to VVM but have R0.00 balance with statement as proof with Vodacom

Vodacom handed my paid up account over to VVM although my statement from Vodacom actually reflects a balance owing to me og -R576.95 (dated 03/08/2016)

VVM have been sent a copy of this statement and refuse to budge on their stance that I owe the money.

Vodacom have an answering system that does not allow me to go through to a 'human' because when I put my ID number in it automatically says that I have been handed over and ends the call.

Vodacom - you handed me over and now I can't sort it out!!! Help