Adverti*****t but no stock

Good day, my mother and I went to mtn over 2 weeks ago to get the MacBook 11inch package .which was still being advertised . we went to the mtn at jacaranda centre and dealt with Lathabo. service was great until I have had to spend the last two weeks contacting to find out when I can collect the laptop and modem . I have been told so many stories in the process and this morning I was told that I should cancel my order . I don't get why you guys advertise packages that you apparently don't have stock of . and then to say yes you have stock in your warehouse but cant get it or have it sent . I am beyond ****ed off !!!! this is the worst experience with you guys I have had . useless !!! **** service.