Which is a guideline for filing a successful complaint?

Filing a successful complaint often hinges on having accurate and reliable documentation, which is why obtaining an official record is crucial. An official record provides evidence of the facts surrounding the complaint, which can enhance the credibility of the complaint and support the claims being made. This could include things like contracts, correspondence, or relevant documents that substantiate the issues being raised. Having such records helps create a clear, factual basis for the complaint, making it easier for the reviewing authority to understand the situation and take appropriate action.

Furthermore, the other options either do not contribute positively to the process or may negatively impact the filing. For example, filing without assistance can lead to mistakes or oversights that could weaken the complaint. Sending a complaint via email might not be appropriate in all situations, especially if a formal submission method is required. Additionally, while it is essential to protect personal information during the complaint process, completely withholding it may hinder the necessary identification or responsiveness associated with resolving the matter. Therefore, obtaining an official record stands out as a vital guideline in preparing a well-rounded and substantiated complaint.