Unprofessional

I had made a Deposit in June for a Trip to leave to Capetown in December and due to unforeseen circumstances I couldn't afford to to pay the remaining fees so I asked to cancel my trip in July and requested my refund as there wasn't a "non refundable deposit " on the adverti*****t. I emailed Fun in the Sun and explained but they refused to give me a refund or even a percentage of the deposit back.