I have a friend who has had some building work done. When the job was nearly finished the builder gave her a final invoice which was for £4000 more than they had agreed and said that he hadnt included the roof in the first quotation. When asked why he hadnt discussed this beofre he replyed that he had "verbaly agreed it" with either her or her partner but couldnt remember which. Obviously they are refusing to pay it, they know the builder under estimated the job as there was a mix up with steel quotes but thats his problem surely and not my mates?? He sent a letter last July saying he was going to file a complaint for the rest of money but they havent heard a thing since. They are planning on selling up and want to know where they wood stand, do ya think he was trying it on???