paying for smoething i did not agree to

i though eskom power cuts were the worst but the service i am getting here take the cup. i have noticed that i pay for a funeral policy that i don't remember signing up for. i sent a letter a while back asking for the service to be canceled because i already have one that i app**** for that i am aware of. why is it me who has to go call people i dont know to cancel something i did not agree to unless the sales people you have in store are giving us false information and sign up people without their consent. can this be sorted out urgently