National Highways Authority Of India [NHAI] — reg refuse to exempt toll tax to the paramilitary while on duty

I m in paramilitary force. On dtd 07-09-19 around 1230 pm i was moving on government duty to panchkula from j&k. There were 4-5 toll plaza enroute but no one charged toll tax from me after showing my i card and purpose of journey to him except himalayan expressway toll plaza pinjore, this type of attitude is very demotivating for the force personnel, especially for those who are in j&k duty for more than 5-6 months continuously or in border guarding, is, ano duties etc.
So i just want to request to nhai to please issue appropriate direction to the himalayan expressway toll plaza regarding toll text exemptions to the paramilitary force (Crpf, bsf, itbo, ssb, cisf).