two weeks still no phone

I upgraded my contract and ordered the new Sony Xperia Z5, they told me they didn't have one in stock and that one would be delivered within 5-7 working days(they said this time frame was just to be on the safe side) this was Monday the 4th of April, over 2 weeks ago of which 11 working days have passed, i phoned them(vodacom) on many occasions to check where the phone was and they said they would get back to me, they never did. It's been 2 weeks and i still have no means of communication and have to rely on a laptop and Facebook as away of communication for business.