Airtel — issues with set up box

Address:

Puri, Odisha, 752104

My airtel set up box doesn't get any current supply. Even after i switch on the power supply, the set up box doesn't get turned on. So, the box doesn't start. And hence, there is no connection to the tv. This issues persists since 15 days and the the customer care people are not helping. They haven't come for repairing even after repeatedly asking them.