WORTHLESS R5 MANDELA COINS THAT HAS NO VALUE

IT'S BEEN 2 YEARS SINCE LAST WE COMMUNICATE ,IN REGARDING ,SELLING MY WORTHLESS R5 MANDELA COINS ,THAT HAS NO VALUE .MOST COIN SHOP HAS ADVISE ME THAT THIS COINS ARE AND HAVE THE SAME VALUE AS THE R5.00 IN THE STREET .SO THUS MEANS YOUR WORDS MEANS NOTHING TO ME AND I HAVE BEEN KNOCKED R6500.00 FOR 5 WORTHLESS COINS THAT JUST HAS THE OLD PRESIDENT MANDELA HEAD ON .THESE COINS HAS NO VALUE .I THINK THAT SPECIAL ASSIGNMENT OR DEVI OR SPEAK OUT NEEDS TO INTERVENE ,SO THAT SA COIN REIMBUSH OUR MONIES BACK IN FULL .