[Resolved]  HDFC Bank Bank Fastag — fastag first time user registration says no records

I got my fastag chip sometimes on 26th november 2019. Till now contentiously trying to register, but it always says no records. I tried contacting the customer care number printed on the chip card i am getting response as user you called is busy at the moment. I have no clue what to do now. Wasted the money, i feel. Never thought a reputed bank, like hdfc, will have such a pathetic service in a particular department. Usually they are good in core banking sector. But here they definitely failed.