listen its geniune error,,,, just go to FD office get letter from them and attased with Nortray public because in that letter alwasy they mention that money is cashable at anytime so that the main proof ,,,,, and do with covering letter to explain them that this is cashable for any time and explain them best you can , fax them , and email them and by mail... make sure send them original letter from Govt. you have right they will give you letter... if any questions ask me.... always fight for justice. your situation is geniune.
Trust me Inshallah you will get justice. and Please pray for my case if you can...