Why is it that whenever I'm in a hurry, the only trams that come by are not in service?

How to say “Why is it that whenever I'm in a hurry, the only trams that come by are not in service?” in Portuguese

In Portuguese

Por que é só eu tá com pressa que todo VLT que passa tá fora de serviço?

Why is it that whenever I'm in a hurry, the only trams that come by are not in service? in other languages