Difference in TD maturity value and Actual value

I am having a TD of 5yrs wherein the interest will get on maturity. Now the TD is matured but there is a difference in maturity value and actual value which was credited in my account. Upon asking the bank, they said that the TDS amount deducted will not be considered for future interest calculation till maturity of the TD and because of which there is a difference in maturity and actual amount. Please help me in this matter