West Bengal and Kerala have a few things in common and an inactive State Commission and indifferent PIOs appear to be some of them. In respect of West Bengal, the Governor has taken some initiative and has sought a report from the
SIC, based on a flurry of complaints form the citizens over the commission's failure to provide information. The following thread will provide you some idea about it.
Data panel asked for facts-Governor frowns on flurry of complaints against RTI flaws .
Taking a cue from this, I suggest that you may prefer a complaint directly to the Governor of your state since he is the appointing-authority of the
SIC.