National Highways Authority Of India [NHAI] — return on same day charged single trip rate

Address:

Chennai, Tamil Nadu, 600058

I had travelled through sv puram toll plaza on 15/12/2019 at 8.33 am and paid rs.70 as toll thru sbi fastag. I returned the same evening at 9.23 pm and was charged rs.70 again though the return trip is only rs.30/00. I am attaching herewith screen shot of my transactions on sbi fastag and would request you to kindly credit my account at the earliest