UTI Infrastructure Technology And Services Limited [UTIITSL] — Non processing of application for pan card

Dear sir/ mam,
My wife neha chaturvedi had applied for pan card through online (Application/ coupan no. U-n[protected] following the instructions and had sent it to your office through indian postal service. On checking its status following message is shown.

"application is withheld for processing due to incomplete details / documentary proof. Please contact to the pan centre where pan application submitted."
As she had applied it online and hard copy along with required documents were sent through post office where should i consult. Please also tell what details/ documents are still required. Please reply on the given email id. If not possible please refund the fee deposited through debit card.

Regards
Sanjay chaturvedi h/o neha chaturvedi
Vill- kaulipur, po- alaiya, jaunpur u.P.
Pin 222201