Capital Legacy - unexplained premium increases

Why is there no zero star rating because that is what I would give Capital Legacy? Been a client of the Diamond Legacy Protection Plan since 1 November 2015. Accepted the terms and conditions at the time. Then my premiums increased in line with the terms of the policy over the years and then suddenly a 58% increase in premium from 1 November 2022, when I queried this, I was told that it is because I turned 60 - except, I did not, I turned 60 in 2021. How is this company acting in the interests of its policy holders? Everyone knows that your income starts declining from age 60, I would love to understand the actuarial science behind this and why it is not disclosed upfront when plans are purchased? To let someone pay reasonable premiums for 7 years believing they are getting value, and then a completely disconnected increase in premiums is just so unacceptable.