You Broadband India — not responding to calls

I have registered with the broadband company for a change in the location of the wifi as i have shifted by 500meters. They had said they would be sending someone on 25th february but its been 5days and no one has come neither they are picking up the phone. Everyday i call them 10times. Complained on customer care also but they are not taking this seriously. I have paid for 3 months so i cannot cut the network also.