Uti Infrastructure Technology & Services Limited [Utiitsl] — Application for correction in PAN

Address:

Pune

Application form submitted to pune office on 21st dec.
Tried calling the 033 number for customer care, but the response i got was not satisfactory.
They are asking me to write an application on a4 size application to manager with details of form submitted to office.
Not sure why is the need of an application on a4 size when i have already provided the form number and scanned copy as a proof of application submitted to pune office on 21st with stamp as received.

Today also called pune office to check the status, but as per their records still inward has not happened.
Can you please tell me how long it will take to receive a PAN card.