Order cancellation

On the 15 August I placed an order with Brandability and asked them to do a quotation for the goods and delivery they asked for my address which I provided. Then I got an e-mail from them telling me the address I gave them is wrong and their courier company will deliver my goods at and additional cost of R2500.00 because it does nor form part of their area. Few days after the courier company called me to tell me they have my goods I must come fetched them which they are based 125km away from me or I can add R300.00 for them to deliver I told them to call Brandability as I have made the order with them and I can not pay for the additional cost as I was not quoted on it, then I got an e-mail from Brandability also telling me that they have talked with the courier company and I must pay the additional cost. I told them that I do not have the additional cost and I would like to cancel the order as it causing so much inconvenience on my part but I have never received any feedback on how to cancel my order and get my money back as I can not pay more money that I was not quoted for on the initial quotation.