Google Associate Account Strategist interview questions

I had an initial phone interview with a recruiter, followed by another phone interview with an account strategist. Then I had onsite interview which comprised of 3 separate interviews. I had an additional 2 subsequent phone interviews to clarify some of my skills.

They came for the campus placements where they told in their ppt that this job is a marketing profile. You will be the Chief Marketing Officer. We were also told that we had to deal with AdWords , AdSense and analytics. I cleared the written test which contained aptitude and essay. In the interview unfortunately, they then told that this is a customer care profile. Then they grill me for an hour and then reject me. They asked me about the job profile, which I told them exactly like they had explained us during the ppt, but then they told that it's not right, this isn't a marketing profile but a customer service profile. Then I asked them why was it told the other way in the ppt, they didn't reply.