Student
                
                   1309 Points
                   Joined January 2009
                
               
			  
			  
             
            
             All you can now do is, make an application in writing to the concerned AO and get the things rectified. Don't forget to take an acknowledgement copy from the AO for the said correction. The said rectification takes about 10-12 days to get it done after the application is approved by the AO. 
Procedure of challan correction by Assessing Officers (both physical and e-payment challans)
After the window period available to banks for challan correction, the assessee can make a request for correction to his or her assessing officer, who is authorized under the departmental OLTAS application to make such correction in challan data in bonafide cases, to enable credit of the taxes paid, to the concerned assessee.
Note:
	- Attach copy of original challan counterfoil.
 
	- In case of correction to challan 280, 282, 283 attach copy of PAN card
 
Also please note do not rely on any TRP rather opt for a CA. Also it was the duty of your friend to check the return before making reimbursement.