All i want is my refund

<br> I had won an award at work which allowed me to win a voucher to use on any experience of my choosing which they would pay using the corporate credit card , I then decided to do shark cage diving and chose GOSHAKCAGE DIVING AFRICA as the company to do this with, I made my booking and payments online as they had a special running and I paid for 2 vouchers which amounted to R2268, I was booked for the 26/12/2015 which I unfortunately missed and thereafter rescheduled with them, ever since then I have been told that there is bad wheather or no shark activity these excuses continued for weeks and I specifically advised that I`am leaving that department and relocating to jhb in which then I would not be able to attend the boat trip if I come this side, eventually the time came for me to leave and I requested a refund into my bank account as the refund cant be done to that coporate credit card as im no longer there and I had given them an invoice already, Tanya advised she would be able to do it however refunding into my bank acc would take longer which I said was ok, now I get an email with a credit card refund of R1028 and when I enquire they say no they cant, I want my money.