Cyber Ads are Cyber bullies

About 3 years ago Cyber Ads, through their marketing person, signed a contract where they were to develop a website. In two weeks , I had a a previous service provider who had neglected doing the same website.

I called Cyber Ads marketing consultant that my website had been sorted and I wished to cancel. Cyber Ads hadn't done anything, 1. No domain registration 2. No consultation with a web developer Completely nothing! For over 3 years they have an aggressive female calling me regularly asking for full website fee. If they are right at law why can't this Cyber bully company go to court on this matter than keep bugging me!