tax wrongly deposited

You will have to write to the Assessing Officer regarding wrong assessment year in the specified format by post or by visiting him personally and getting an acknowledgement slip. 

To know your AO: 
login to https://www.incometaxindiaefiling.gov.in/ >> Profile settings>> my profile>> PAN details

fORMAT IS GIVEN HERE

 https://docs.google.com/a/cleartax.in/document/d/1jOxqQ5BcF1EUZfuAMLYHyJme48vv3oB3JwYoWa99kAY/edit?usp=sharing

That is upto him. if the income of previous year is below taxable limit why worry?