newbee-how to withdrew fund to my bank account


i want to withdraw money to my bank account from zerodha kite . i have total account value of rs.30,000+ and 2,23000+ in my margin available .i want to withdraw rs. 60,000 but i cant because they say i can take out only rs.29,000 only . how can i convert my margin available into cash fund.
please help


For account specific questions better to call Zerodha support, rather than give account details on a public forum