Billed when service was not active

On the 28th or 29th of March, I received a call from a Vodacom associated company. The gentleman offered me a 2GB data package which I agreed to. However the router device was only activated on the 04th of April. I dont understand how a prorata amount of R101.73 was debited from my account when the device was activated in this week.<br> <br> Than too I had to go to a vodacom shop for assistance and thereafter I had to call activations as the sim card was not registered on the network.<br> <br> I have tried calling several times to Vodacom's billing department to no avail. Please can this be sorted out as a matter of urgency.<br> <br> Rehana