[Resolved]  Hathway Cable & Datacom — modem not working, unable to contact customer service

I am residing in velachery chennai. From past two weeks in my modem los (Loss of signal) light is showing every 15 minutes. I have to turn off and on the modem every 15 minutes. I have literally raised around 5 tickets. The most irritable thing is they (Customer care) are calling nd telling we ll resolve your issue soon. Later 15 minutes the ticket which i raised is automatically getting closed. As this is pandemic period i am dependable on this modem for work from home. I am getting severe warning from my office due to this issue. I recently spend 2000 to buy jio m2 wireless router for my official work. But they never miss to call you during payment due time... I am completely frustrated. I lost my self respect in office just because of their poor customer service. Please help me.