Spice Jet Airlines — rejection of booking in defence quota

On dated 02 feb 18, i have blocked a seat telephonically in flt no. Sg3219 from ccu to ixs for 12 feb in defence quota. A pnr no. (Lceg2n) was generated against this booking and i assure to pay it next day on 03 feb 18 at spice jet counter at silchar airport. Bt on dated 03 feb 18 in morning hrs i received a call from spice jet cc that the booking made for me was incorrect as there is no availibility of seat in defece quota in same flt n date.