Competition in the telecom sector is heating up with major telecom operators like Reliance Jio, Airtel and Vodafone trying their best to lure in customers. These companies keep introducing new plans and revamping old ones to entice new customers and retain older ones. However, in the midst of big telecom players, state-run telco BSNL is not too far behind. The company has been aggressively refreshing its offerings to strengthen its foothold in the market but it might just have taken a step in the wrong direction. As per a Telecom Talk report, BSNL is reinstating a calling cap on select prepaid plans.