A. 1. Use multiple contact methods: If you are not receiving timely responses via email, try reaching out through other channels such as live chat, social media, or phone if available. 2. Be concise and clear: When contacting customer service, provide all necessary details in a clear and concise manner to expedite the response process. 3. Follow up: If you haven't received a response in a reasonable time, send a follow-up message to check on the status of your inquiry.

B. 4. Check for self-service options: Look for a help center or FAQ section on the Hacoo website that may address your issue without needing to contact customer service.