Cognizant Technology Solutions — about the interviewer

I cts interview at tirupathi (11'30 slot 17th feb) disgusting interview i ever faced in my life. He just don't know what are derived datatypes and don't know how's an for loop works. And if i supposed to explain this is this he's not at all listening he just simply arguing with me and said that i don't know basics. I don't know his name but if you want to know his name you can see on my application where he used to sign. My amcat id [protected].
Really i lost my good impression on cts after facing this interview. I am writing this complaint because that person may reject many who are talented but it doesn't matter but you are losing your fame by recruiting such people in your company.