IDP IELTS — racist and harassing behavior

I had appeared for my speaking IELTS speaking module last week on 7th June, 2019 at Red Fox Hotel, Chandigarh. Everything went well in beginning but i was told to wait for few minutes after completion of interview which actually was later extended to half an hour. Other candidates were only allowed to leave in just 1-2 minutes in front of me.

To my surprise, I was informed that the female interviewer "Mandeep Singh" had doubts that I cheated in exam with help of a device somewhere hidden on my body. I was checked before interview and checked again with a full body search but no such device was found. I really felt insulted in front of other candidates. This is completely outrageous on behalf of interviewer to question a honest candidate without any evidence