Hello
Thank you very much for all your answers.
@Lister_Sister85: no absolutely not, you didn't offended, no worries. You're absolutely right with what you wrote. Unfortunately I'm not able to change my flights, because of privat matters I have to be back in Switzerland at Sunday. And I know that all is my fault, that Showmasters has nothing to do with my situation. I hoped for a solution that was feasible for both sides.... @Wrong Name: really? If you are right, then, you made my day!! I'll read the ticket infos again, my english is not so good...
Thank you