I have some issues with the bond. I signed a bond with a private company for 5000 and paid the amount, but they said NOC charges would be 21000. Now, without any reason, they have declined my NOC and are demanding 41000. What should I do? Are they fraudulent? I received an email from an advocate with an FIR document. Do advocates send FIR documents, or do they come from the police or government departments? What should I do?