Unexplainable premium increase

Last year I added new members on my ABSA LIFE policy and I was paying R778 premium, this year in July it went up to R816 which is 5% of course, surprisingly it went up again n ridiculously to R954 a month later which is August I pay my premiums on the 3rd of each month, I have been calling and calling ever since to request an explanation and the only answer I get is that they will escalate the matter to their IT department and that they will send me an email. Since then m still in the dark no one is willing to assist me.The only thing they keep saying is that I should continue paying the R954 and once the matter has been dealt with I will get my refund, it's so heartbreaking that I always call and wait but still now no one has tried to assist me. The last time I called the consultant promised to refer the matter to her manager, still the manager hasn't done anything.