So disappointed in Old Mutual

Old Mutual doesn't care about their clients, I've been trying to find someone who can help me find out what's happening with an account that my mother opened for me years ago, but I no one seems to know anything. I didn't know that this account was still active until I downloaded the Old Mutual app where I saw there was money in an account under investments but i couldn't claim it or move it or anything. I then wrote an email to app support asking if it really was there or if there was maybe a mistake, they then referred me to another department that supposedly deals with those kinds of issues, but they didn't help, they told me they'll investigate and I've been waiting to hear back from them since March. I have also called the call center ( PLEASE DON'T WASTE YOUR TIME!!!) The call center agent said he can't see the amount I'm seeing on that account and he didn't know anything about the app and he couldn't help. My family has been with Old Mutual for years, I'm so disappointed in the service I've gotten from them. I with this whole thing could have been handled better, all I wanted was to find out what's going on in that account and why the App was showing money if there isn't any money in the account.