National Highways Authority Of India [NHAI] — Fastag unauthorised charges

Dear sir,
This is in reference to the balance deduction for my fast tag veh. Reg. No. Mh13 bn 8057.
Today i got a message that rs. 420 debited from your fastag balance on account shortfall in toll charges as per the khed shivapur toll plaza against transaction reference no.[protected].
However while traveling from this toll plaza in the morning at 7.22 am on 12.09.2020 rs. 95 charged at khed shivapur toll plaza against transaction ref. [protected], at that time after paying my fastag balance was 972.38 for which i have received sms also. Then how you are charging this amount and for what? Kindly give an explaination for the same and credit the amount to my fast tag account at the earliest.
Regards
Aditya s. Joshi