Overworked employees in the DB service store in Di...

Overworked employees in the DB service store in Dillenburg who sell tickets in addition to selling the items in the shop of Deutsche Bahn. I give the tip to check the tickets because the employees like to sell several seats. Example I wanted a trip for one person from A to B. However, I paid a trip with two seats from A to B. No one at Deutsche Bahn (customer dialogue) or this shop is able or willing to compensate me for the damage caused. ... Thank you DB Germany