Dreaded disease claim

I have sent my claim on 2017/11/14 to Old Mutal and was handed over for accessing on 2017/11/15.I was promised that the claim won't take longer than 15 working days.From this day 2017/12/27 I still haven't received an answer.Everytime I make an enquiry I am told that they are busy working on it and I must wait.I was told that if other people can wait so can I and I feel that it's not the correct manner to treat a customer.I just feel that its unacceptable to make promises that you can't keep.