contract upgrade

no response or acklodgement of my query. please note mail sent:<br> From: Lerato <br> Sent: Friday 11 March 2016 09:05<br> To: [Email Removed]<br> Subject: Fw: ***<br> Good day<br> Would like to report bad service I received from Vodacom shop in east gate, saw a catalogue of their specials, went there on Saturday the 20th February 2016, and wanted to upgrade to one of their specials, iPhone 6s rose gold colour 12 gig for 36months at R379 per month. They told me they don't have the phone in stock & will be receiving it on Wednesday, told me to leave my contact details, Wednesday came and I received no phone call, followed up with them and they told me they don't have stock of my colour told them even gold would be fine, they still didn't have stock. after 2 weeks of phone call follow ups, I decided to go there, they had stock of my phone however in gold but the special had finished and the phone was now R429 per month. My query is why would they advertise something that is out of stock and why was I not informed that the special is running out in all my phone calls I made to them? when I asked them why is it my fault that the special ran out while I was waiting?