Advance tax paid on wrong PAN how to get it back

Write application to TDS Department 

1) Through online using IT Portal - Helpline Desk 

2) AO if knows the proper officer

3) Go to Department office in person if possible with Letter for correction.

Rectify-errors-made-payment-advance-tax-self-assessment-tax

In the case of the following errors, the bank branch accepting the tax payments are permitted to correct the challan data and in the time frame mentioned below:

• Amount of tax – within 7 days from the deposit of challan
• Assessment year – within 7 days from the deposit of challan
• Major head code – within 3 months from the deposit of challan
• Minor head code – within 3 months from the deposit of challan
• PAN of the taxpayer – within 7 days from the deposit of challan
• Nature of payment – within 3 months from the deposit of challan

Refer::   challan-correction-mechanism-26082011.htm