Complete Inconsideration of Customer

I recently went to Mall of Africa Vodacom walk-in store to apply for the Samsung S8+ & J5 Prime combo deal. Prior to going to the store i called and inquired if they had stock in the colour (Black) that i required and i received confirmation. When i arrived at the store i again confirmed that the phones are indeed available and i received the answer that they have been kept aside for me. I was informed that by the sales person that the same person i spoke to over the phone had kept it aside and that person confirmed. This past Monday morning was when i was at the store. Once my port to Vodacom was complete i went to the store after calling the salesman - travelling over 100 km's. When i arrived at the store i was made to wait for half an hour becasue i returning customer is not as important as other customers who still don't know what they want. Once i was accommodated by a salesman i was informed that one of the phones were not available and given a story that "oh it was another customers phone who left it at the store and did not want their child to see it since it was a surprise." i was extremely upset but promised that stock will come in the next day and i will get the phone. i left a message for that specific individual who i had spoken to previously when i first called to confirm the stock holding. The next day (Thursday) i did not receive a call the entire day when i called the store (after 4pm) neither did the stock arrive nor was that person in at the time, so i demanded that person call me that day. i did receive a call an hour later but nothing of value just a couple of sorries and a "i will call you back". Well do this very moment no call back (Friday 3pm) so i called the salesperson and he says "oh i sent you a whatsapp and the color you require is not available, we only have gold". So first of all since my contract has not been actually activated i have no airtime and no data so i am not receiving whatsapp messages, but now the colour is not available. This is totally unacceptable; drive over 100km for nothing on a week night (wasting petrol and three hours of my time), 5 days and-counting without my number, broken promises, no feedback, clearly they do not care .