If you are making a claim and have comprehensive coverage most companies try and settle the claim within 5-7 days.
If you belong to a professional body or a trade union check to see if they negotiate cheaper van insurance for their members.
If you already have separate breakdown cover, you could get it removed from your policy, or remove it from your van insurance quote, to reduce payments.
Failure to report an accident to your insurer, however minor the accident is, could invalidate your insurance.
If you are planning to cancel your policy do so at the end of the year as it's only full years no claims bonus that counts and you may lose out.