Vini Girsls Hostel — fraud.. not returning caution money after leaving the hostel

I lived in vini girls hostel indrapuri c sector bhopal for a year. Hostel management informed me that i have to give 5000 rs caution money and it will be returned when i leave their hostel and they had a condition for returning caution money that i have to fill one year session and live for one year and after that i have to inform them a month before leaving the hostel and then my caution money will be provided to me.. But they are not returning my money even after fulfilling all their terms and informing one month prior
They never informed anyone living in the hostel that there will be sessions for every year for bond. That doesn't lie in their rulebook as well
And there is no documentation for that in their management.. This is clearly fraud i want my money back