Hyundai Motor India — Car registration number issue

Address:

Laxmi hyundai bellary road 560092

I have purchased hyundai erna sx petrol from laxmi hyundai bellary road bangalore 560092.
I have purcased on 19th july 2021 and its been a month over but they didn't provide me the registration number. They have not done the payment to rto yet. I have only the temp registration number which has validity of 1month only and it is expired now. Please help me or suggest me what should i do. The hyndai showroom people are not responding properly.

Name : sudhir behera