National Highways Authority Of India [NHAI] — Deduction of extra money(twice the original price) through fast tag

Sir, with due respect I would like to inform you that I am a resident of Guwahati, Assam. Few days back (10 th March, 2021 at 6.57 PM) I went to another district (Nalbari) where I need to cross the madanpur toll plaza. Usually that toll plaza charged 55 rupees for one time through offline mode.
But I used fast tag. And I noticed that rupees 105 was deducted from my account for a single time. Which is almost 100% more than the actual price and is not acceptable.