Flagstar Bank

I am a realtor who was doing a short sale for clients who had their loan with Flag Star Bank. I have been working diligently to get them to look at any of the 5 or 6 offers that I kept bringing to them. never did they once look at anything! we also had gotten the foreclosure postponed about 5 months ago. we had a good cash offer in and they kept asking for documents that I had already sent them, over and over again. they were just stalling to foreclose on the property. they didnt give my clients any notice at all of a sale date! then I called in today to check the status of the short sale and they told me they sold the house already on the 15th of Sept. how can they do this without any notice to my clients? why didnt they tell me that a sale date was set the last time I called them and checked on the short sale. they outright lied by concealing these facts to me and I had authorization for them to disclose this to me! now I have to tell the owners that its too late to do anything about it as well as the buyers who have been waiting patiently for an answer on their offer. also I had a sign and a 100.00 lock box on the home that is gone now. so I lost money, time and effort for nothing. they shouldnt be able to do this without anyone knowing about it!