TP Developer interview questions

Interviewed through a consultancy. Interview was scheduled at 1 pm. It was raining so I reached at 1:20. There was no one at the reception. A gaurd was siting there, he said it will take some time as everyone is on lunch. I waited and waited till 3 but no one came to take the interview. I called the consultancy and finally at 4 someone came for the interview. The questions involved basic C# and .net concepts like access modifiers, use of this keyword, api, private constructor etc. Also, it was a 6 day working company as it is a BPO.