Prolonged car claim payment

Some guy bumped into my car in 2018 November, he happened to be insured with Old Mutual. A claim was opened with a third party and approved in 2020 November. I was informed that I will receive the payment in 5 working days. After a month of making follow ups I was told that the money has been paid into my account. Only to find that the money was paid into an incorrect account holder. I don’t understand who would make such a careless mistake because I’m even use a different bank from the of the alleged incorrect holder. My matter has been under investigation since January 2021 and no one even bothers to call and give me at least a weekly update on the investigation.