Poor Customer Service

On Monday 5th of February I contact Vodacom to do my upgrade on my cell phone contract. The agent I dealt with seems very efficient and gave me an excellent deal. I was informed that I would receive an sms of confirmation and a call to verify the delivery details - which I did. I decided to follow up on the 7th only to find out that the phone was on back order. I had countless conversations on the 8th, again with Vodacom as well as sending 2 emails which have not been rep**** to. At no point was I told the unit was not in stock, nor was I offered a stock item but in a different colour. I was also not informed that the unit was on back order. When I spoke to an agent yesterday, she promised to email the agent I dealt with on the 5th and that she would ensure she was in the office, failing which she would call me right back - I am still waiting.