I WILL NEVER TAKE OUT ANY INSURANCE WITH OLD MUTUAL

I WAS A BENEFICIARY ON MY MUM'S OLD MUTUAL PROVIDENT FUND .UPON RECEIVING THE PAYOUT , I CALLED OLD MUTUAL MUTUAL FOR A BREAKDOWN OF THE PAYMENT AND WAS TOLD THAT THEY CAN'T GIVE ME ANY INFO WITHOUT A LETTER OF AUTHORITY .I ALSO INQUIRED ABOUT THE TAX DEDUCTIONS AND THE LADY I SPOKE TO IN THE PAYMENTS DEPT COULD NOT EXPLAIN TO ME HOW THE TAX WAS WORKED OUT OR DEDUCTED . DO I NOT HAVE THE RIGHT TO GET THIS INFO ???? WHEN YOU TAKE OUT INSURANCE POLICIES THEN THEY MAKE IT SOUND SO ROSY BUT WHEN IT'S TIME TO CLAIM THEN IT'S A TOTALLY DIFFERENT STORY. TRUST ME I KNOW BECAUSE I'M EXPERIENCING SO MANY PROBLEMS WITH TWO OTHER INSURANCE COMPANIES AS WELL.