I need a little attention friends and want to inform You that companies who do exchange of currency or black and white conversion will never ask for booking amount of fees to book slot or something because companies have already given intimations to the RBI that they will be submitting the old currency for which RBI has already given time so please don't entertain people who ask for slot booking fees or something all the company people want is tickets and accommodation because they are the people who will be taking all the risk and moreover it gives surety that funds are there. So please make sure of this and think wisely before investment and the company who are unable to perform also pay 10 lakhs penalty...

Thanks