Not reporting offers are no longer available

As I was due for my upgrade I went online to see what offers there were for tablet and data bundles.<br> On the website one of the first deals that comes up in the tablet options is the Apple IPad Air 2 16GB Wifi Cellular tablet. When you click on it there are options for how much data you would like and if you want to buy now or call me back.<br> Having spoken to the online agent I am told the offer is no longer available and they are not going to get any more stock- please could you then explain to me how it is that you can allow this offer to be available online when technically it is no longer available or at the very least- there could be an out of stock sign. I have been a Telkom customer for 2 years and have been very happy until now. I think this is hugely unprofessional of such a large company to neglect to mention such things.