short sale-important question!!!

[Frank Walton]

If i have a signed agrement and i am in first place with my offer is it legal for the realtor/homeowner to accept another offer and send it to the bank and then try to get me to raise my offer so i don't lose the house. Because i thought if you have a signed agrement and in first place they can not sign another agrement unless they go is 2nd place, or is it different in a short sale. Because i fell like i'm getting dick around.