Old Mutual Refuses to payout on Death Policy

A telemarketer from Old Mutual Group Life sold me a policy in 2013 whereby I increased the life cover on my mother in law. She has since passed on at the age of 87 and when I went to lodge the claim Old Mutual informed me that their agent had changed the cover so that my life had been insured and my mother in law is the beneficiary i.e. they had switched the names around on the policy. I then asked for a print out of the recorded tape of the telephone conversation where I was written up for the policy and only received a copy of the incorrect policy whereby my 87 year old mother in law is the beneficiary and I the 64 year old pensioner who's life is covered. I have contacted Old Mutual many times and received little to no assistance and have yet to receive a copy of the telephone conversation. I have been with Old Mutual for 33 years and am very disappointed having been de*****ed in this way.