Fruadly open my demate /ac

Friends I have apply for a trading a/c in angel broking my demate with sharekhan. aftersome month i come to know  my demate also open by doing my duplicate signature. i have evidence of KYC form on which my deplicate signature done. when i inform to Angel H.O office by writing email, they denied to accept my complaint by replying me that they have open my demate as per my signature. they are not ready to accept forgery signature done.
now help me what i can do???
for any clarification contact me
Pintu Maurya
9029058042 or

write me email:-

pintumaurya86 @ yahoo.com