AOA

i). As per rules, no candidate without TR (or bank slip) is allowed to take examination. It was good for you that police was called and they interfered and helped you out. Though it is beleived that there were some disturbances thats why the invagilator called the police... Remain careful for the next time. ..

ii). No need to worry, be calm and write a reply (as stated in your first post).

iii). If you were not a candidate, who was making hue and cry, then clearly write in your application that you were not a trouble maker. Rather a benefittee of the lot. ..

iv). While writting reply, you can aslo seek personal hearing. Keep in mind, be calm and logical.

Regards

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'Thee woh ik shakhs kay tasawar saay - abb woh ranayee khayal kahaan'