Poor service and lack of Proffesionalism

I AM VERY VERY DISSAPOINTED. I FLEW BACK TO SOUTH AFRICA FROM THE UK IN SEPTEMBER. APOUN MY ARRIVAL AT HEATHROW, I WA TOLD I COULD NOT FLY BACK TO SOUTH AFRICA UNLESS I HAD A RETURN TICKET. I ALREADY HAD A TICKET PURCHASED FROM FLIGHT CENTER.I HAD TO PURCHASE ANOTHER RETURN TICKET THROUGH ETHIOPIAN AIR AND WAS ASSURED BY THE ASIAN LADY THERE, THAT I WOULD BE FULLY REFUNDED ONCE BACK IN SA, AND THAT I SHOULD CONTACT THE RANDBURG BRANCH.I HAVE CONTACTED THEM ON SEVERAL OCCASIONS AND HAVE BEEN PROMISED SOMEONE WILL GET BACK TO ME...WE ARE NOW TWO MONTHS DOWN THE LINE AND NOTHING HAS BEEN DONE...NOT A PHONE CALL...NOT A MAIL...NOTHING....THIS IS ABSOLUTELY SHOCKING SERVICE AND SOMEONE MUST BE HELD ACCOUNTABLE AS THE TICKET EXPIRES TODAY. I PAID AN ADDITIONAL 267 POUNDS WHICH I DID NOT HAVE SEEING THE FIRST TICKET COST ME 350 POUNDS!! I WANT MY REFUND AS PROMISED AND JUST EXPECT QUALITY SERVICE AND COMMITMENT. IM REALLY ****ED OFF AND DISSAPOINTED.