Hathway/ Bangalore — unable to return the modem... follow up cs is ridiculous

Address:

560094

I canceled hates service long back for their poor service. Now the cs only calls back with new offers. I have told many often to collect the router or give near by address. They inappropriately cut the calls. And the most funny thing is they send court notice for the modem... Which was offered with the package initially and now they dont collect it back and send notices??? What a cheap company! Resolve this...