Rochester kramerville

Very unhappy... order numer 45110340 received and paid for delivery. Delivery date was set for Friday 15/05 then received a call to pay additional delivery fee. Very unhappy as this is not what I was quoted for. How can changes be made after deal was done and paid for?? Deal was done at Rochester Kramerville with Kone Donald Mulaydzi and Takalani. Please I need my order to be delivered as it was paid for and there was no extra charges quoted or discussed