misleading customer

I have taken a policy with frank for my dad upon sigining up to frank I requested life cover. I had made numerous calls to Frank requesting documents and a policy number. After 2 years of paying for the policy I find out that the policy I was paying for was for life cover however my dad was only covered for unnatural causes upon signing up I was not informed that the policy only covers for unnatural causes then I would have not taken the policy I had made it very clear I'm requesting life cover...we were not informed that the policy only covers unnatural causes- I request Urgent help it is now 3 months and I have not received any feedback regarding my issue...Please help