VODACOM - WORST CUSTOMER SERVICE

I wanted to upgrade my current contract, but instead I got a new contract with the wrong phone delivered to me even after I phoned to cancel the new contract before delivery... I then got the correct phone with an UPGRADE delivered to my house, but I am still struggling to get Vodacom to cancel the wrong contract and collect the phone. I has been 2 weeks now. Completely fed up and WISH that I never upgraded. Now I need to sit with their **** service for 2 more years!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!