I had submitted DEMAT closer application some 3 weeks ago (around 20 June 2013) and the account was not closed till last sunday….I filed complaint with SCORES on sunday and I got response within 24 hrs from SBI Demat after filing complaint againt them….after filling the complaint I sent a mail to SBI demat and stated that I already filed a complaint and to my surprise within 24 hrs they resolved my issue…..even SBI is scared of SEBI….