Terrible service

I upgraded about a month ago and the package included a smart watch. The consultant who assited said it would take about 2 weeks for them to have stock and they would phone me when it arrives. 3 weeks later I phoned just to find out the stock hasn't arrived yet and the consultant who I spoke to dropped the phone in my ear when I started raising my concern. Then 4 weeks later I go to the store to find out the stock still hasn't arrived and I was told to be patient I will get my watch. When I brought up that my first bill is due and I haven't received the watch yet and that I am not willing to pay for something I don't have the store manager came over and said that they are receiving stock from another store and will give me another customer's watch on Monday needless to say it's Tuesday and still haven't heard anything. I don't want another customer's watch I want mine we going for 5 weeks now. How much longer should I be patient?????