42-year-old Harish Chand Tiwari has given the Sharma house 20 years of service. In 2002, the digital revolution was taking over major cities like Gwalior in Madhya Pradesh and up came a BSNL cellphone tower next door to the Sharmas. After the tower's installation, Mr Tiwari's health gradually deteriorated with frequent bouts of fever, night sweats and fatigue. In 2013, he was diagnosed with Hodgkin's Lymphoma.