Rejection of condonation request u/s.119(2)(b) for an nri

What is the remedy for an NRI whose applicaiton u/s.119(2)(b) for condonation of delay in filing his Returns (already filed) was rejected on the ground that his being an NRI is not a justifiable ground for not filing the Return.  TDS deduction is from bank interest,reflected in 26AS and Income for all the years is below taxable income of respective year.  One of the Assessment Year for which condonation .was requested was beyond 6 years of the date of request, but the return was filed last year within 6 back years.