Refuses to cancel the insurance policy

I requested an obligation free life Insurance with Outsurance, and after comparing it with another one from a different insurer I decided not to take Outsurance insurance and phoned requesting a cancellation. But the outsurance consultants are sending me from pillar to post and are even ignoring my emails. which part of I want \\out\don't they understand this people. I even went to an extent of emailing them my policy with another company to show why I don't want them and why the other company product is better than theirs.\"\"\""