National Highways Authority Of India [NHAI] — 600 rs deducted from my fastag balance

Address:

Jaipur, Rajasthan, 302039

I travelled on jaipur ajmer highway on dated 25.12.19. I crossed 3 tolls from jaipur to ajmer and proper charges were levied and deducted from my nhai vallet. During return journey 600 extra rs were deducted by fastag. When i tried to register a complaint on 1033 they denied to register it by saying that there is no transaction i'd mentioned in the deduction msg received from fastag. This has happened second time with me.
It feels like indian government is making money via fastag and customer is suffering.