Cancel my policy

after the increase in premium and decrease in the cover itself, you would expect them to communicate with the new policy document and premium. i was debited R514 from the R340 that i was paying, wow. i have been trying to get a hold of them on 3 numbers but none is answered. I want to cancel my policy. simple as that. i will find other insurance houses that aren't this bad and the premium matches the cover. its appalling and truly unprofessional.