Bonanza Portfolio Ltd — negative balance

Hi, i opened the account. Agent said will do the transaction based on your confirmation. Initially was fine and called for any trading to be done. However it was stopped after few months and started trading on behalf without consultation. All of a sudden got call from another agent that my balance is in negative. I have to pay to keep the account operating. I started complaining to seniors including head of compliant team about the agent andbreversal of the charges levied howver not received any satisfactory revert. I aleady submitted closure letter multiple times based on discussion with call centre which is also not processed. Still am getting the statement of the account. Pls expedite...