He could have been set up on direct deposit and auto-pay.
Yep, Social Security and the utility companies could have kept that circular relationship going for decades.
All of my bills are. In fact, in my will I list every bill I'm paying, every income source and their respective contact numbers and every online account and password.
When my dad died my sister was beside herself trying to keep up with sending out checks to all the bills that were constantly coming in........