Passport Office Nagpur — money taken saying passport cover will be issued

Address:

Nagpur, Maharashtra, 440024

Dear sir/madam,

Just 15 days back, my old parents came to nagpur passport office located at manakapur for passport renewal appointment and some guy in the office asked them to buy a passport cover, said it would be delivered on the house address, did not give any receipt. He took rs.1100 from them.
Passport cover is never delivered on the house address and i deeply suspect that this could be an incidence of cheating.
I'm sure this must have been captured in the cctv footage.
There appointment was scheduled on 14/09/2017 and name is mr. And mrs. Nagmote.
Although, i'll file a police complaint for sure but request your kind intervention to address the issue.