Zerodha — deduction of amount

Address:

Hazaribagh, Jharkhand, 825301

My current balance is 430. How is my balance automatically deducted?
I pay rs 500 to my zerodha trading account. And purchased 4 shares o[censored]co bank @ 19.70 per share from *cnc*. I sold out 1 share, and remain 3 shares where goes i had no idea for these shares. After that i inform to mr. Rajesh at [protected] and my remain balance is rs. 489. And today when i check my fund balance then i saw it's just rs.430/-.
On 07/09/18 i pay 500 to zerodha trade account.
On 08/09/2018 buy 4 shares o[censored]co bank and sold out 1 share, remain 3 shares where it goes i had no idea not showing in my holding. Then talked to mr rajesh and he suggested to me trade from next monday (10/09/2018).
And today (Sunday) 09/09/2018 my balance is rs 430 without buying of any shares.
Now explain me what happening with my balance.