Increased premiums

In 2015 I took out a funeral cover with Hollard life, by last year I was paying R354 and R 321 for the policies and like every year it goes up. So this year the one for R321 increased to R351 and the one for R354 increased to R370/380 and a month later both increased to R400+ I contacted them but no reply from the company I have 2 months not paying the policies because I really don't understand what's going on and why would the policies increase twice in a year policies numbers are ***2 and ***7