Promoters of Hathway Cable & Datacom, one of the leading cable TV and broadband services providers, are set to infuse Rs 350 crore in the company over the next 18 months.Hathway, which has a daunting task ahead in terms of protecting its turf as Mukesh Ambani’s Reliance Jio is set to disrupt the broadband market with its JioFibernet, is looking to deleverage its balance sheet by Rs 500 crore by March 2020.“Promoters will be investing Rs 350 crore in the business in form of equity as well as long-term unsecured loans,” Rajan Gupta, managing director, Hathway Cable told reporters on Tuesday.This, Gupta said, will be in tranches. While the company has already received Rs 100 crore in the month of July, another tranche of Rs 100 crore will be received by end of August.“Balance Rs 150 crore will come in by March 2020, while the additional Rs 150 crore will be generated from operations over the next 18 months,” Gupta informed.Hathway’s net debt as on March 31, 2018, was at Rs 1,617 crore.The company has close to 800,000 broadband consumers with almost 90% using high-speed (over 40 mbps) plans. Hathway’s ARPU from broadband business stands at around Rs 710 per month.“We have a broadband home pass of 5.2 million homes, out of which just 16% are currently using broadband. We see a big market here, Gupta said.