Kenstar Food Processor — no demo

Address:

Ahmedabad, Gujarat

i purchased a kenstar food processor from big bazar on 15 August 2011 and sales person committed me that i'll get demo at my place with in 48 hours but today its 30 August 2011 and even after several reminders telephonically as well as personally i have not received any demo.
every time the staff as well as manager of big bazar apologises and that's it.
mr. rajendra who was the sales person that time is an extremely stupid and a non-sense guy who thinks that coustmers should be thankful to him for his job. his contact no. is - +91-[protected], iskon,ahmedabad and big bazar authories i really don't understand thhat who recruits yor stall.