Hello dear 

Do you remember that whether it was your fault in typing their name while filling form or you did everything correct but its interchanged in your admit card as you cannot blame NTA if you mistyped. But there's no need to worry , I suggest you to go through NTA  helpline number and tell them your problem. They will surely help you .

 email id :- neetug-nta@nic.in

phone number :-8076535482, 7703859909

Thankyou