Evening all, Im curently in the process of a 12 month contract with a particular client of mine, with fixed dates each month to clean the exterior hard surface areas of their building. However, the client in question has phoned on a couple of occasions recently, once to ask if i could do a one off clean as an extra, and on another occasion to ask if i could come in the day before we were due too. On both occasions we were asked at very short notice. The last time was the night before they wanted it cleaned. Ive been lucky because we've managed to make both visits as requested. What Im trying to ask is do you charge any extra over the agreed amount in the contract for the change of dates, and times etc as it is such short notice and how much would you ask for? As I havant stated anything like this in the contract, ( silly me ). Any help greatly appreciated!!!!!!!!