Vodacom online - SHOCKING SERVICE and EMPTY PROMISES

I have recently upgraded my 1 phone number with vodacom. 1st they gave me a new contract and not just an upgrade on my existing contract - new number etc. Then I got that resolved and upgraded my existing number that was due for an upgrade. The order was finalized via Vodacom online. A few minutes after the call I received a sms saying that the device I have ordered is out of stock I then called Vodacom to change the device so that I can get a new phone asap. Long story short, after calling vodacom back 6 times now during the past 7 working days and being promised a certain lady whom I placed the order with will call me back, no one from vodacom has called me back and still no new phone or upgrade received. More than a week later and more than an hour of my time wasted on vodacom, my order issue is still not recsolved.