Keep everyone sweet.

People tend to only want to deal with people they like and it's claimed that some sellers are influenced by whether they like the person who's going to be living in what was their home. So if several people have put in the same offer they will probably choose the people they felt the best chemistry with.

Estate Agents aren't influenced in the same way - some chance! But even they're human. If you get into a shouting match with the agent they may well enjoy recommending to the seller that, perhaps it's better to go back to those other people who seem to be a lot less trouble, and who, by complete coincidence (i.e. when the agent called them), have just confirmed they're still interested. Just be your sweetest self with everyone who's involved. But try not to sound too desperate.Some say that human interaction is more about the feelings people get from an interaction than what is actually said.