Hello ,

You have three options now..

1. you can call the nata 2020 call centere  (or)  You can report at where you download the admit card..

2.In that official website you can find that contact info...Go through that ..

3. If nothing will help ,you go to the examination center and request the Examination cell and You can find the name in their student name with roll numbers..(Last option ).

I hope everything may doing well..

THANK YOU.