waiting for upgrade stock

Hi<br> <br> I went for an upgrade on 26/09/2015, a phone they are still advertising, but they haven'r received stock yet. they have an unlimited data promotion until 31 March 2016, and they say they cant extend it. i feel that they are advertising something they cant deliver, and we wont be able to make use of this deal ( unlimited data) for the period we would have been able to if they had the stock. <br> Phoned 180 yesterday to complain about bill, agent logged it and said she would sms the reference number because her system was freezing. Haven't received anything yet. she told me to phone 10213 for my other query, I held on for 48 minutes before putting phone done. this is ridiculous!!!!