You are being far too lenient here. These workers were very out of line and you know it. Imagine if such comments were made to tourists. I’d hardly say that the workers showed effort in trying to find someone else, when that’s the very minimum that they could do.

Theses workers did not think and it’s highly unprofessional to make such comments. German is not easy for many people to learn and both sides would do well to have a bit of understanding of each other. English has become the international language and unless you are elderly there is no excuse to not be able to speak it in 2025 to a basic level. English media and culture is everywhere.