Thanks DJ Menno, Dj R.driver, Terry_42 and DJimC for your suggestion as and sorry for delay in replying.
Since you’ve got a manager you could have redirected the client to your manager from the start. “I’m sorry, for that type of requests you need to talk to my boss”.
We in india, normally don’t have Manager culture, because they ask for more commission and don’t take too much responsibilities too. We handle the shows by our self and manage everything.
As I said, I’m new to DJ arena and just started playing, keeping calm and doing my work honestly is the only thing I understand. I feel not to get in unnecessary mess untill required. I know I sound little awkward here, but i’m learning.