We were interested in this

We were interested in this beautiful property to let and viewed it twice to make sure we wanted it. We did have reservations be cause the sign said to let and for sale so we inquired because we wanted to stay at least 15months before we have to go to back to the US. We were told "no problem, whichever comes first" and "if we accept your application and deposit it'll be taken off the selling market" by not one but two people. The blonde lady who showed us the flat and the brunette who worked in the office. So we filled out the paperwork and put down the deposit. Gave notice to our current landlord. Called to have our SKY changed over. Everything...Yesterday morning (a week later) we get a call saying we can't move in as the property has been sold. I feel like they weren't very honest and flat out lied about their business practices. I do feel kind of discriminated against being Americans and we do plan on letting our military friends know how badly we were treated.