pension fund miscalculation and the amount dropping with 300000k

I contributed to GEPF FOR 20 YEARS AS A GORVENMENT EMPLOYEE AND ON MY BENEFITS MY ADDITIONAL TWO YEARS OF SERVICE IS NOT REFLECTING ON THE CALCULATIONS AND INSTEAD THE PENSION AMOUNT HAS DROPPED WITH 300000 THOUSAND RANDS WILL LIKE TO KNOW WHAT IS SUBTRACTING THE PENSION AMOUNT IF IT SHOULD BE ACCUMULATING AND BECOMING MORE AND WHERE IS MY ADDITONAL 2 YEARS AMOUNTS?