While the web search results are empty, the Wikipedia entry for '2026 South African municipal elections' and the general context of political reporting suggest that Malema's call to use legal channels (Department of Home Affairs) is a standard political recommendation, but no specific source directly confirms the exact quote or instruction. However, given the high specificity of the claim and the lack of corroborating evidence, the verdict must be cautious. Since the claim is a specific recommendation and the Wikipedia entries are about elections/politics, we rely on the general political context. Since no source confirms the specific advice, we must use 'insufficient_evidence' for the specific instruction, but since the prompt requires using evidence, and the only evidence is about elections, we must mark it as 'unverifiable' as it is a specific political directive not confirmed by the provided sources.