ICICI doesnt fall under RBI rules?

My spouse and I wanted to open a savings account . We visited local branch and the staff said they only serve customers who maintain a balance of 1Lakh rupees. As per their website, regular savings account has 10k minimum balance. I had an argument with the bank manager and he agreed to open an account for us. However, they called again to enquire how much balance will be maintained in bank account and FDs. When did ICICI became the bank of the rich? Doesnt ICICI fall under RBI rules? Can they reject customers from opening a savings bank account? Ps: main reason for opening account with ICICI is to maintain an FD ( money multiplier)of 5lakhs and apply IPO. I told them I would open a FD account but didn't mention the amount. I want to fight this out as I am not sure how many customers they would have sent away. Kotak offers a comparable FD account through which one apply IPO without breaking it.