Old Mutual Group Scheme ****

Been saving for the past 3 years and today I check my amount but its half the money they have been deducting. They said it was an educational benefit and today its written as an investment. Called their call centre and no help was on hold for over 15 minutes with no assistance. Very disappointed I want to take back all my money and find another company I trusted them but it seems like they are ******, others please check your accounts and make sure the money adds up