Call Centre does not know their own policies

So, after applying on FNB website for a new Smart Device, I had to phone THEM to hear that my application has been approved. The email I received said they would contact me within 3 working days. After i phoned in and spoke to the above mentioned, he indicated to me that they were however out of stock and he could not give me a date to which the stock would arrive again. I asked to speak to his supervisor - which was convienently busy - and he said she was not available. The above mentioned told me that i could wait more than