Voice mail and the horrible machines that answer phones are the worst. I'm forced to use the Relay even though I hate it. So many hearing people do not want to use Relay. Also recorded messages that go too fast for the relay service agent to relay accurately. TTYs with one-line have characters running from right to left.
Computers are better.
Voice mail or recording and some 900 numbers that relay services can't keep up with, such as those for computer technical assistance. Modern public TTY machines prevent being able to read in bright sun and dark places. It endangers my life when this happens in emergency situations. I have son at Old Dominion University and was very concerned for his safety. We had hurricanes come through this fall.