2G router not working

Good Day,<br> I received a call from Vodacom sales selling me a 2Gig router for 149 for 24 months. i took up the offer and my router was delivered last Wednesday the 8th April 2015. however upon receiving the router i connected it to my work PC and it should automatically download an app to enable me to set it up, this didnt happen , i then tried it at my home PC and still it's not working. when i called 082 111 i was told to go to the nearest Vodacom store but there i was then told there i will have to pay R25 per 15 minutes of assistance i get, this is information i was never told when i took over the contract and i will not be paying for something that is not working. i requested to cancel the contract but have been told to call the after sales department on ***, i have been calling them for the past 2 days each time i hang up after wating for assistance for over 45 minutes with no one taking my call.<br> i would like to cancel the contract and want nothing to do with it and i believe i'm within my rights but how do i cancel it if i cant get hold of the department to assist me? im concerned that soon i will be told that the grace period has expired.