Yes, DB tickets should only be booked via a payment provider that allows for chargebacks.

I know of instances where the end result of a more than half a year support escalation process of the highest instance said "you (the customer) did everything correctly, but our support provided wrong advice. Bad luck though, as we don't consider ourselves accountable for mistakes in the support process. Please stop contacting us."

I once bought the wrong ticket, got checked, and the staff told me I had to leave the train at the next station. The ticket I purchased was actually more expensive than the "SuperSparPreis" for the correct ticket. So, I ended up paying more and twice for this journey.

I bought the wrong ticket for a plane once and they wouldn’t even let me on until I spent an absolute fortune on a walk up fare.

This is the type of staff that can easily be replaced by computers.

unless there's a union

Yes but I mean, they are so inhuman. My wife was once refused migraine medication because the dokter made some mistake on receipt, they could see her in pain in the car. But computer says no.

Sure, they'll be in trouble perhaps when going against the computer, but then if no one can go against the computer, why bother with humans?

To be clear: I prefer the humans. But self-thinking ones.