Upgrade incompetence

I am at a loss for words ! I have been waiting months to upgrade my phone to the iPhone 17pro silver 512gb as well as my iPhone watch . I have sent numerous emails to both istore Cresta and Fourways and they just don’t bother to respond . The watch they have stock and I was understanding for a while waiting for stock of the phone but over 2 months now is ridiculous - the fact no one answers is also so frustrating. And when I have gone in they just say no stock . Yet when I go on the istore website I can order the phone and will just need to wait 2-3 weeks for delivery . So please tell me why the store cannot order the phone for my upgrade !?!? This is terrible customer service . I need to upgrade asap . If you just don’t want my business let me know rather ! Unacceptable . I would appreciate a manager calling me !