Vodcom's bullying tactics

Vodacom phoned me and offered an upgrade on my contract. The smooth-talking guy ion the phone assured me that they will collect the phone they are sending if I am not completely happy with it. Two days later, on 9 September, I received a Hisense phone from Vodacom. Realising that this phone does not take two simcards, I phoned Vodacom on 11 September to collect thier phone again. Many calls and facebook-messages later, they still did not collect their phone. This seems to be a deliberate bullying- tactic to force me into a nhew contract with a phone that has very limited use. My advice to readers: Do not accept any deals from Vodacom from someone phoning you. Rather visit your local cellphone shop and deal with honest people.