Old Mutual Blues

I have been battling to finalize a payout from an investment I had with them which matured on 1 March. E-mailed - no response 3 weeks later. Tried the WhattsApp number as encouraged - told I have no investment/contract with them, twice. Tried call centre -3 calls, all on hold for 30 minutes plus. 3rd call waited 50 minutes before connecting, then told to go into a branch. Then an e-mail for me to rate their in-branch service. Tried that, before you can send the rating you first have to log in, but then your rating disappears. Impossible to send them a rating. Their systems don't work, it's as if they don't want you to bother them. Shocking service.