TCS — Mobile theft

I'm Manisha I went to write exam in ion digital zone idz rajarajeshwari college of engineering kumbalgodu centre. I showed my hall ticket & went inside. I called my parents about reaching & kept my mobile in bag and placed in shelves which is provided by centre & went. After I came out & took bag & thought to call my parents but mobile wasn't there in bag. I called to my number with others phone it was ringing I came to know mobile is stolen. I told centre head to see camera but they did not do. I requested them till 3pm but no use. Please help me to check cctv footage.