Vodacom online pathic customer service

On the 19th Of March i did application online for a samsung phone , at the end of the application , it says "error" , i then phoned their call centre , the agent assisted me in doing the application it was successful , got a call to confirm my order , on the 25th i did the follow up with the call centre only to be told that their system has cancelled my order , i must start all over again

how is the system cancelling my order when I was told by your agent that the order went through I must expect delivery in two to 7 working days , the reason given was it could be the color I wanted was not available , still it is not making sense if I was approved and told it will be delivered in 2 to 7 working days, am so disappointed at Vodacom , how about calling me and say we don't have the color you want we have the following colors then I make a choice , you just cancel and not communicate with me , your service is very poor