26AS NOT SHOW CORRECT TDS

1. The right course of action would be to file the return claiming the refund (as per for 16) and then approaching the employer to file a revised TDS return. 
2. This way, the department will send a notice u/s 143(1) and in response to that notice reason for mismatch can be specified. Meanwhile, TDS return by your employer should have been revised with the correct TDS amount. 
Please correct me if the above solution has an alternative view.