WiFI Rooters not accepted (and returned)billed for

Good day,<br> <br> In December a tele-sales person from Vodacom contacted me - rambling off this special offers (Wifi rooters with Data x 2) on my existing account etc etc. The package came via courier but I immediately decided to send it back since we recently upgraded our data package at home. I did not insert the simcards and felt that it is save since it is within a seven day period. When I received my account - I was surprised to see that I am now billed for both of them - R109 per month .<br> I did send it back via registered post and did not activate the simcard.<br> Please assist - because when you phone vodacom - you're either put on hold, or gets transferred to 5 different people.