One day deal ****

I app**** for a "one day deal" online on the 2nd August 2018. (Iphone 6 with wireless headphones) Vodacom's "Call centre agent" supposed to contact me within 24 hours to complete the process. I don't hear from them, so I try contacting them via their online chat. I am told that they have no record of my application (despite me having an email acknowledgement of the application together with 2 separate reference numbers). And they cannot offer me the deal anymore as they are out of stock on the wireless headphones. They then try offering me the normal iphone deal (typical sales tactics???). I ask the agent to get his manager to call me, which never happens (I have a printed copy of my chat with the online chat agent).

Kindly resolve this issue and give me the contract I app**** for instead of trying to get me to sign up for something different