Salesforce Sr Software Engineer interview questions

i am putting it exactly how the biased interviewer put the question, "In a railway station, trains are arriving at every 10mins, another train arrives at once in every 15mins, how many platforms the station has?", i asked him multiple clarifications on the questions (listed below) and always got the same annoying reply, "the question is clear, do you have any questions?" 1. Me: so there are two trains? Interviewer: No answer but humming something.. 2. Me: so it's spans for multiple days? Interviewer:"the question is clear, do you have any questions?" 3. Me: can you give me a sample input/output? am unable to understand. Interviewer: the question is clear, do you have any questions? In-between he got busy in the other monitor, whatever i ask or talk he kept humming something.. i shared the interview feedback with HR and as everyone knows of this salesforce(or microsoft) hyderabad culture, got no acknowledgment. i think as most of the employees are from that particular state their intention is to reject outsiders.