Please Energy Drink pulls out of promo deal

We had an event on the 5th December at Jnine lounge in Meadowlands Soweto and We communicate with the company ( PLEASE ENERGY DRINK ) about the event and they agreed to help us with the event, with branding and coming to the event to sell the product on the day. They agreed for us to put their brand on our event flyers and posters. Two days before the event they told us we have to buy 20 case of stock and when we were about to buy they told us we have to buy merchandise. They didn't pitcheck on the day or make an effort to respond to our calls and texts. Please breached our agreement and didn't even apologise, they cost us loss of saless and embarrassment to our customers. We are heavily disappointed with their conduct.