National Highways Authority Of India [NHAI] — not serious about vehicle number and ask for cash only

I recently traveled goa and have noticed that toll both staff not serious about vehicle registration number and they put any random number. We were group of 10 people in 3 different cars. And one reciept out of three cars on same toll had different/randon number. The registration number of the car on toll receipt was not for any of the cars we were travelling with. When i asked the faculty sitting on toll both he said sir its fine and is just a formality. When i asked him to correct the recipt he refused. This way they can misuse the purpose of toll gates.

2nd thing he refused to accept the card payment, whe i told him i dont have full cash and stressed on paying only by card he made me and other people wait for atleast 5 minutes as if i did sone crime on requesting card payment.