Hello,

You haven't mentioned the exam you are enquiring about. If there is any discrepancies in the admit card then you should notify the concerned authority as early as possible. You may read the instructions to find the contact details to report discrepancy in admit card. If you didn't find such details visit the official page of the exam to get the contact details. Provide them your details and requisite proof to get the name of your father's name changed in your admit card.