No payment no response no feedback

1 Star rating is way too high for the customer service at old mutual. I have been waiting on an investment to pay out for over a year. I receive no feedback or no response I have reference numbers and tracking numbers but no feedback. I have been to a branch now for the third time the advisor called their call centre and they had him hanging on the phone for almost an hour after he was transferred between departments four times and after that they cut the call.. It’s the worst claim related service I have ever experienced. I have also called and emailed them with no response. Its really bad service worst part is this is an investment of my deceased mother she going on two years now and still her claim is not sorted. This is pathetic