State Bank of India — State Bank Of India [SBI] wrong deduction of 5850 in my RD account

Address: No. 361/1089, Near Gokula Extension, HMT Main Road, 2nd Stage, Mathikere, Bangalore - 560054

I had a RD account of rs 30000 per month for the period of one year in branch mathikere branch 40605
At maturity the money is not credited to my account and the RD account statement is showing that 5850 is deducted and mentions dcomm pr dr adj.

Please clarify that in which head this amount of rs 5850 was deducted since there is no valid reason to deduct the amont so please credit this amount in my saving account.

When i spoke to the customer care, they mentioned it must be a faulty deduction as the branch has deducted this penalty. penalty for what reason??

Application regarding this matter is already emailed to the branch manager.
Thanx