Mismatch in Form 16A and Form 26AS

Form 16A from the bank shows, 1325 TDS deducted for interest amount 13248. Where as Form 26AS shows, 2006 TDS deposited for interest amount 17661. Also, the from the interest certificate from bank, the total interest amount(on FDs) is shown as 20058. In Form 26AS, for a transaction of interest amount 1694, the TDS deposited is shown as 410. But it seems to be for (1694 + 2394). Here, amount 2394 in the transaction list is missing. So, there is a difference of 2394 from interest certificate and Form 26AS. Also, bank is providing Form 26AS for last quarter(Jan 17 - Mar 17) only. How can I make sure for other quarters the TDS deducted are matching in Form 26AS ? With this condition, should I proceed for IT filing ? I know that, if I show 20058 in income from other sources, there is a tax liability considered on higher tax bracket I am on, which I have to pay as self assessment. My question is the amount 20058 is not reflected in Form 26AS. What should I do with this condition ? How to proceed as the dead line for IT filing is arriving fast. ? Please advice me.? Thanks in advance.