TERRIBLE FREE RANGE EGGS

HI<br> WE BOUGHT A BIG TRAY OF EGGS FROM WOOLOIES BEDFORDVIEW A FEW DAYS AGO,WHEN MY MUM WAS FRYING IT IT WAS BUSTING IN THE OIL AND BURNT HER FLEW ALL OVER THE OIL,WE HAVEN'T HAD THIS EXPERIENCE BEFORE ESPECIALLY THE EGGS ARE FREE RANGE PLEASE ADVISE?