Single-Line Automated Calling System Setup

I want to reach my customers by phone without dialing each number myself, so I’m looking for a small-scale automated calling system that will run on just one phone line. Your task is to recommend the most cost-effective hardware or VoIP service, configure the software (Asterisk, FreePBX, Twilio, or a comparable solution—whichever fits best), and walk me through basic operation so I can upload a list of numbers, schedule calls, and play a short pre-recorded message or transfer to me when someone picks up.

Key points
• Only one active line is required, so the setup should be light and simple—no full call-center stack.
• I need the system installed, tested, and documented so I can manage future campaigns myself.
• Please include brief instructions on how to add or edit the recorded message and view basic call reports.

If you have experience building single-line auto-dialers or mini-IVR solutions, let me know what platform you’d use and how quickly you can deliver.