Notice on income tax

| have filed my income tax return and verified it Today I got a notice to pay balance tax from the department. When i checked my form 16 from traces there are Rs7300 as tds from my Salary and 2560 as tds from fD interest by the bank. As per return my taxis 8560 and I should receive 1300 as refund. But when I check my 26 As statement it shows Rs 2300 and Rs 2560 only in it it shows an amount of Rs 5000 as credit and debit of tds. May I know what should I do for the notice?