Hi Ali and Gowthaman,
If the account states :Restricted refund" my advice is try doing the following and wait instead of changing your name
1.File your ITR with correct account number and IFSC code,e-verify it and wait for intimation
2.Since you are saying you are eligible for refund, wait for refund ,2-3 days. after intimation sent to you
3.Since its restricted refund you should get it.If it fails, you will get a message to re-issue refund online. Login to income tax portal, go to e-tax, click reissue refund, there will be a refund request reflecting there. If the refund request is not showaing wait for 24-48 hrs, after you have got the refund failure.
For reissue refund online you will be asked to authenticate using OTP.