Aliens Developers Private Limited - Claims not reimbursed

I received call from Mr. Praveen on *st November **** regarding attending interview at Aliens Group office in Hyderabad on *nd November ****. He asked for my personal details for booking flight tickets. He confirmed that Delhi to Hyderabad flight will be booked for *nd November morning. Then whole day interview process will go on at Aliens Group office. And return flight will be booked for *nd November evening. After sometime i received mail from Aliens Group that flight ticket is booked. The booking showed that return is on *rd Nov evening instead of *nd Nov evening. I conveyed this mis-booking to Praveen and he confirmed that he will get the booking rectified shortly, in the meantime I may proceed with the Delhi-Hyd flight. After reaching Hyderabad, and continuos follow up with Praveen, he said he cannot make modification in booking as this was due to his mistake and it will cost company extra which he will not be able to explain to management. So he asked me to book a hotel in Hyderabad for *nd Nov night and the remaining interview process will continue on *rd Nov. He confirmed that Rs. ****/- will be reimbursed for the hotel from the company. Now, after more than ** days since the booking, still the hotel claim is not being processed by Praveen and he is not replying to mails.