Not Delivering Correcct Item

I ordered the Samsung Galaxy S6 Blue Telephonically on 27th July 2015. (At the same time MTN had a Special & they had the Blue in stock for R10 more a month - which ended on 28th July). Vodacom said I would have delivery on 30th Aug. I kept calling Vodacom to find out when I would be receiving my phone - on 3 Aug they finally said - we actually don't have the Blue we only have the other 3 colours. I don't like the other colours at all!!! But I had no choice as the special at MTN had finished by then. If Vodacom had told me on 27th Jul that they don't have the Blue phone I would have not ordered through them & got the Blue from MTN for just R10 more (at least its would be a phone that I actually liked). Vodacom **** to me to get the sale - if they had been upfront with me on the 27th Jul they would have Lost the sale!!!. Then on the 3rd Aug when I spoke to Vodacom they promised me that I would be receiving a Free wireless charger with the Gold - I confirmed this Twice (I have the recording of these),on delivery there was no wireless charger - again promise Not materialising. Since then I mailed Vodacom the recordings where I was promised the wireless charger But have nothing yet !