Almost a month and still no phone

My wife and I went to Autopage in Centurion on 06/04/2015 to renew her contract. The service was actually pretty decent and we decided on the Sony Z3 Compact for her. We were informed that they do not have that phone available at the branch but will have it sent from another branch or order it. A week ago the person who phoned her to let het know that she could go for the upgrade called and asked if she had completed the renewal at the branch. She informed him that she had not and she was assured that he would find out what is going on and get back to her. This never happened. She phoned the Centurion branch this morning at 9 am and was told that she will be called back. This also never happened. It has been almost a month now and we still do not have the new phone. What started as a good experience is now really dreadful. If they are unable to supply their clients with certain models of phones then they should remove these phones from their brochures and their system. If they are capable of supplying these phones (which seems doubtful) then they should better manage their stock and stock delivery to give their clients something resembling service.