not resolving issue

Location/place: 9,mangoe lane,1st floor shop no-15 kolkata-01

Name of company/service: vodafone

this is to bring to your notice that i purchase vodafone 3 g usb stick its not working on my laptop inspite of several visit to the place i bought it vodafone store and number of telephone complaint i didnt get any kind of feedback and service.as a matter i suffered as a consumer who purchased their product