No delivery of iPhone after contract upgrade

As a long standing Vodacom customer, I upgraded my Vodacom contract nearly two weeks ago after being eligible for an upgrade. I first registered on the website and then called to upgrade my phone. I spoke to someone and all went well, I ordered a iphone 6S silver 65gig in the Smart S contract package. Nearly two weeks later and no delivery. On your website under terms and conditions it explicitly states that if a phone isnt delivered next day, the customer is eligible for a month of free service. Nearly two weeks later and nothing. I called again last week, and they promised 30 April. Its now 5 May and nothing! What must I do to upgrade my account? If nothing is done by Friday, I will cancel my contract and move to Cell C!