Translation of discourteous in German

So she and I went to the food store to buy some lunch. However, the store had almost no food and one could pay in local currency or in US dollars. One could really see the country's poor economy.
We have an option of uploading an excel file. However, we do give this option only to institutions and schools. The other ideas may be given in the future too. Thanks a lot for a great feedback!
Your offer seems interesting to me. The language exchange is one of my future projects, so that we will contact you later when I am ready to discuss the ways and possibilities of learning together.