regarding stocks and securities

 renetly i got a case against one security , gist of the case is

             on 22  jan 2008 broker sold entire stocks of the customer with out getting

    proper information,atleast  they didnt informed the same to the customer and sent

contract note after 2 days, before this issue the broker assured to sell shares on 21 st

jan 2008, the defence of the client is the diff between 21 and 22 is 70k loss aprox...

the custokmer sent a around more than 70 mails to the concern company and its

 branch office , they did nt choose to give single reply to the customer,

    Then he approached me to issue L N  . I issued notice under consumer protection

 act ,

    sir/ madum is it enough to give notice under con pro act ,or can i file private complaint u/sec 420 of ipc,

 please give ur valuable suggestions to me and my client bcoz he is physically disabled

person ,help him to get justice.

thankyou