Well I have bought and sold a lot of houses and I have often just been told the day of exchange when it has actually happened, I don't think I have ever had a letter, that is because it is not an exact science and there is often a chain etc. etc. and everything has to be in place for it all to happen. It is not usual to have completion on the same day although it is not unheard of, and most people are rather pleased to get things all signed sealed and over with after an often stressful time. To be honest your funds should be there ready for the exchange, and if you are that far down the line your solicitor would naturally assume that you were expecting to complete the purchase. When instructing them to assist you in the purchase, weren't you aiming for just that ... a purchase ? If so I don't really see that you are being quite practical about it, although whether you have a legal claim is another matter.