National Highways Authority Of India [NHAI] — blacklisting of fastag

Address:

560032

I have fastag account no. : 21405027. Adequate balance is available. On 11 july 2019 and 14 july 2019 when passing through nhai fastag toll gate on nh 44 near kempegowda international airport, bangalore, toll screen is showing "blacklisted". So i had to pay the regular toll. Toll gate operator told me fastag is not updated. I called icici bank and they confirmed it is updated. Please check and advise reasons for the wrong blacklist display