Consumer Redressal

My Hathway Account ID - 1172178896 Broadband not working since Friday, on the same day I had raised an complaint against it to customer care and they told me that there is some problem with router and a technician will visit me to fix it but no one came, next two days i was trying to call Hathway customer care but no one picked up. On Monday I got connected with customer care and again got the same answer that today someone will get in touch with you, on Tuesday also same thing happened then I decide to mail the nodal officer of our region, no surprise no response from there also, except this i have mailed to Delhi help desk also but no response from any of them.Due to this worst customer service lot of my work got effected which is totally depend on internet, I don't know what is the purpose of there customer care as they don't even know the status of my complain and why the technician not came nor they have the power to transfer the call to some higher authority.I don't know what to do now.