Currently standing in a half closed supermarket because the tills are down and they cant take payments

There's a fairly large supermarket near me that has both kinds of outages.

Occasionally it can't take cards because the (fiber? cable?) internet is down, so it's cash only.

Occasionally it can't take cash because the safe has its own cellular connection, and the cell tower is down.

I was at Frank's Pizza in downtown Houston a few weeks ago and they were giving slices of pizza away because the POS terminal died, and nobody knew enough math to take cash. I tried to give them a $10 and told them to keep the change, but "keep the change" is an unknown phrase these days. They simply couldn't wrap their brains around it. But hey, free pizza!