Ibps - only 2hrs given for objective

i have same complaint regarding the time given for IBPS exam conducted in qaid-e-millat college, chennai...the invigilators came only by 9.30 n after filling the form v started our exam only by 10 am...By 12 they asked us to return the papers for objective...whereas in the call letter v were asked to report by 8.30 n that exam will start by 9...even the half an hour lag will have a major impact on our exam...i was not able to do the english section since dint have enough time...i would request u to take necessary action against the invigilators n would like to know whom v should approach for these type of complaints...what ever done n said v r the ones who suffer..