TDS is not an extra tax: it is credited against your final tax liability when you file your return. You can check TDS deducted in your name in Form 26AS and the Annual Information Statement. If too much was deducted, you get a refund after filing.
Finance glossary
What is Tax deducted at source (TDS)?
Tax that the payer deducts before paying you, such as your employer on salary or your bank on FD interest, and deposits with the government.