National Highways Authority Of India [NHAI] — Excess toll charged at coimbatore L &T bypass

I have traveled by car (TN19E8116) from Thrissur to chennai on 10/11/2020 . In Coimbatore bypass there are 6 Toll plazas and the total toll charge for crossing this bypass is Rs.45. But they have charged Rs 90 from me by deducting from my Fastag. the details are given below

1. Madukkarai toll plaza on[protected] at 08:43:14.= Rs.17
2..Pollachi Cochin Toll Plaza toll plaza on[protected] at 08:46:48.= Rs. 0.0
3. Pollachi Salem Toll Plaza toll plaza on[protected] at 08:52:48. = Rs.45
4. Trichy Cochin toll plaza on[protected] at 09:07:32. = Rs.28
5. Trichy Cochin toll plaza on[protected] at 09:07:32.=Rs.0.0
6.Neelambur toll plaza on[protected] at 09:17:49 = Rs.0

They charged an extra amount of Rs.45 from me during this trip. Earlier in January 2020 also same kind of incident has been occured and I have a made a complaint but no action has been taken.