no its not mistakenly bec genrally they are giving extension for three times only now its upon you how you are taking extension i.e five months + 1 months and if u need more then they will give you 2 weeks but the charge is same for that...so do one thing type new form and try once again maybe this time you will get 1 months also try to explain on counter that you still not completed six month and also show your ticket at counter it self then you maybe no need to go upstair for approval...