Sanlam Death Claim

My father passed away last year, he was with sanlam on the investment and also the death insurance, a week after the funeral I went to start the claiming process, they printed a statement for me and also got me to get the forms signed by my mother, a month later Sanlam claims that the there is not death claim. Their service emails says they will be in contact with beneficiary but have not called they just sent a lousy email about the investment.