Complaint re upgrade and discombobulation in this company. No one cares!

I did an upgrade on the 8th of March with a lovely consultant. She sent me the quote and said the confirmation dept would call me in order to confirm the upgrade. I spoke to this consultation numerous times, and she said my particular requested phone was initially they had a few in stock. Furthermore they were getting more stock of my phone. Another phone call with another consultant confirmed this information. Subsequent to my phone call I did not hear from the confirmations dept. I must have called a minimum of 12 times, whereby I was told that dept would call me. The price of the premium and the phone were perfect and what I really wanted. After calling again, they then told me my phone has been discontinued and my contract was cancelled. I am so so upset. Not a peep from anyone from Vodacom to explain or discuss this with me!! I have been with Vodacom for over 20 years! No one to talk to...How's that for a slap in the face.