To cancel American Income Life Insurance, there should be a phone number on your policy that you can call to do so. They may send you a form to sign to cancel it.
If you cannot reach them, you can just quit paying on your policy and it will lapse by itself.
Agent, Rural Mutual Insurance Co., Union Grove, WI
If this policy is a term life insurance policy not making your next premium payment is definately an option. On the other hand if this policy is a whole life or universal life policy and has cash value built up; you will want to contact the company to have it canceled properly to receive the balance of the cash value after cancelling the policy. If you are unable to find the company's phone number you may wish to try looking them up with the insurance commissioner of the state the policy was issued in.
If you cannot reach them, you can just quit paying on your policy and it will lapse by itself.