Old Mutual claims department's customer service is bad

My father passed away in July this year and he had a annuity policy with Old Mutual. There hasn't been an income here at home since my father's passing. Old Mutual is taking forever to sort out his claim. We've been calling the claims department for the past 3 weeks now. There's an Agent who works in the claims department by the name Anita, she gave us false information, put me on hold for a very long time and then muted the call. Old Mutual does not work on a First Call Resolution basis.