Worst hotel. We booked hotel for 100 people for we...

Worst hotel. We booked hotel for 100 people for wedding purposes and agreed on the rates and gave advance money. Before 30 days, they called and said management has changed the dates and we have to pay extra even after the deal was done.
There is no guarantee of the rate that we book in advance.
I will not recommend this hotel for big occasion like wedding or where presitge comes first....