OTTAWA-GATINEAU - Six home-improvement companies have been fined $420,000 for making non-compliant telemarketing calls to Canadians, the CRTC said Tuesday.Spurred by complaints, the Commission said that an investigation by its chief compliance and enforcement officer found that the companies called Canadians whose numbers were registered on the national Do Not Call List (DNCL). In addition, certain companies had failed to register with or subscribe to the national DNCL, made calls to Canadians during restricted hours, and used inaccurate versions of the list.The companies and the penalties are:- Just Energy Corp.: $240,000- Green Planet Home Services Inc.: $90,000- 4140800 Canada Inc....