Hi,
As you have mentioned that you haven't provided your cast certificate and also given the examination. Since, due to failure of caste verification, you will be considered as General candidate in throughout the process till admission. Most of the organization conducting exams do not provide correction after exam has happened. As you also missed the one correction form that releases before the exam, so there is no chance of getting it corrected. However, you can talk to their helpline for any ways, but most of such cases are closed without much resolution.
You can also visit there website to know about such options and to contact them.
All the best.
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