Refund and Return of Mobile Device

I was sold a Vodacom Mobile Data device over the phone by a representative of MONDO, but was informed on the call that there would be no fee associated with it as it was a reward for being a longstanding client of Vodacom. I was informed I could load data on it but the device would be free. I accepted the terms over the phone but then noticed I was being billed R128 a month for the device and 2G of data it had on it. <br> When raising my concern with MONDO rewards over the phone, they investigated the issue and came back to me promptly stating they understood why I felt aggrieved and if i returned the unused device to them they'd cancel the contract and reimburse me for it.<br> During this process I dealt with Balungile \Bianca"Gwabe from MONDO and she was exceptionally understanding"