******* change to beneficiary on policy

I have tried contacting old mutual in regard to my greenlight policy, no response from call, held on for 40 min twice. Email sent in regard to my query and get my portfolio sent to me which I can view on my own. My beneficiaries are missing and one is added as a Mr Lotz whom I don't know. I want to know what happened as old mutual advised they were not affected by the hack in regards to experian however it does not look that way. I want answers to this