Old Webhosting Providers Who Hijack DNS?

linzeal asks: "Oneworld Hosting my old webhosting provider keeps hijacking my DNS records for my website Anarchists for Life and pointing it at another customer's website. I have talked to the owner of the IP block as well as my old web host a multitude of times to no avail. My new webhosting provider Trilucid has been very helpful and has even suggested legal action. Does anyone here have an idea on how to solve this problem short of that?"