Verizon appears to have some similar problem. I never even signed up for electronic billing. They just decided to stop sending paper, and I got bills via email

Verizon appears to have some similar problem. I never even signed up for electronic billing. They just decided to stop sending paper, and I got bills via email for 2 or 3 months, then they stopped and I didn't notice until they called me to ask if I was going to pay my bill! Eventually, I just decided to have my computer remind me to pay the bill instead of relying on them to remind me. It's such nonsense.