Bloomberg Sales & Analytic interview questions

First Round HR calling you Why Bloomberg/why this position.... Second Round On-site Interview there are two team leaders to interview me the HR will give you prep calls and there're also shadowing session beforehand, Isn't that really good? They ask you Why Bloomberg Why this department What's your past experience of Customer service... I think I screwed it up since after they found out I knew nothing about customer service, they just lost interest in me, yeah, why did I think I can do this job I am questioning myself right now as well?