Om Prakash from Uttar Pradesh is speaking. A brother asked that he ordered some books from NIBVD, made the payment, but has not received the books yet. Please wait for some time, as it may take around 15 days to a month for the books to be issued and delivered. If you cannot reach them from your current number, try contacting them from another number to check whether there is any issue. Since it is a government organization, it is unlikely to be a scam. So, please be patient and try contacting them again through another person or number.