If it is turned on, and you have “Repeated Calls” Enabled, the second call will come through. Just go to Settings>Do Not Disturb, and make sure that both Manual and Scheduled are off. Sounds like your phone is set up to go straight to voicemail. you’ll have a 24 hour wait for the agent.
Of the many things your phone can do, automatically recording a phone call is not one of them. Perhaps not including that feature is a security precaution for phone makers; it could be a potential liability issue. Regardless, from time to time, documenting a call is a useful thing to do, whether you’re conducting a phone interview or cataloging a customer service call.

1. Checking Your Voicemail on a Cell Phone Access your digital voice mailbox through your smartphone's touch screen. On an iOS phone, tap on the Phone application and then look for a square in the bottom right hand corner of the screen that reads Voicemail.
If you want to re-enable the Voicemail service on your Android device, then you can easily do that from your phone settings. I hope this guide will help you in deleting your old Voicemail greetings and record the new ones for the callers.