what is basis of bank charging  commitment charges on 60 per cent loan amount 

2) does your loan agreement contain such a clause 

1. Check the loan agreement as regards the rate of charges.

2. The ban depending upon the profile of the customer tweak the cahrges but the same must not vary to such an extent.

3. So take information through RTI as regards cahrges imposed upon other customers on similar circumstances.

4. If the difference is drastic then file case before the consumer forum 

You can file a  complaint to banking ombudsman or consumer court against the same. 

1.  File a grievance petition before the Banking Ombudsman office and also before the RBI office, for reversal of the same citing "bad practices, unfair trade practices, harassment etc,,,,"

2.  Additionally, if the case has strong merit, THEN also file grievance petition before the local consumer court.

Hello,

send a legal notice to them and if they do not resolve then file a complaint before the banking ombudsman.

regards

you should file a complaint before consumer forum and also you should file a complaint before ombudsman. 

You may have to visit the terms and conditions of the loan agreement which you have signed at the time of borrowing this amount.

If the bank is violating the conditions then you can drag the bank to consumer court for unfair trade practice or deficiency in service.

Before that you can exhaust the remedy by giving a complaint to the banking ombudsman seeking releif and remedy to this unjustified act of the bank.

Dear Client 

First you should make an application to bank for reduction of rate of interest and seek their reply on the same.

The application should be send through email to complaint department with cc to branch manager.  

If reply is not favorable then send them a legal notice or you can directly make complaint to banking ombudsman or consumer court regarding difference of rate of interest and seek relief from them.